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Reviewed by Jesus:
The Top Tier of AMSOIL Synthetic Motor Oil. AMSOIL Signature Series Synthetic Motor Oil delivers extraordinary lubrication in all types of automotive gasoline engines. Engineered for enthusiasts seeking maximum protection and performance. Precision-formulated with cutting-edge technology and a longstanding devotion to making the world's best motor oil. The result: engine protection that blows the doors off the highest industry standards.
• 50% more cleaning power vs. AMSOIL OE Motor Oil
• Ideal for turbos & direct injection
• Guaranteed protection for up to 25,000 miles or 1 year
Package sizes include:
Quart Bottle
Gallon Bottle
30-Gallon Drum
55-Gallon Drum
AMSOIL Signature Series Synthetic Motor Oil is excellent for use in all types of gasoline-fueled vehicles. It is recommended for all domestic and foreign vehicles requiring any of the listed performance specifications:
• API SN (Resource Conserving), SM
• GM dexos1Gen 2 (supersedes 6094M)
• Chrysler MS-6395
• Ford WSS-M2C947-A
• Fortified with detergents that exceed the dexos1 Gen 2 sulfated ash specification
AMSOIL Signature Series Synthetic Motor Oil delivers extraordinary lubrication in all types of automotive gasoline engines. By combining industry-premier synthetic technology with AMSOIL premium additives, Signature Series Synthetic Motor Oil exceeds the higher performance demands of modern engines. It withstands the stress of higher horsepower, higher heat and complicated emissions control systems. Signature Series Synthetic Motor Oil is engineered to outperform competitive conventional and synthetic motor oils. It delivers long-lasting performance and protection.
AMSOIL, the leader in automotive synthetic lubrication, produced the World's first API-qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL, the First in Synthetics®, to do the best job protecting your engine.
AMSOIL Signature Series Synthetic Motor Oil develops a strong fluid film that keeps metal surfaces separated while its robust anti-wear additives further reduce wear in metal-to-metal contact regions for maximum engine life. The Sequence IVA Engine Test, which must be passed to meet the industry-standard API SN specification, simulates extended periods of stop-and-go driving.
For 100 hours, the test engine cycles between 50 minutes of idling and 10 minutes of elevated rpm - conditions that encourage engine wear. The camshaft is then measured for wear in 84 locations and an average score is determined. We used Signature Series 0W-20, the lightest viscosity in the line, to further increase the severity of the test. AMSOIL Signature Series Synthetic Motor Oil provided 75 percent more engine protection against horsepower loss and wear* than required by the industry standard, extending the life of vital components like pistons and cams.
We armed Signature Series with an advanced detergent system that protects against harmful deposits and low-speed pre-ignition (LSPI). Most new engines feature gasoline direct injection (GDI), often combined with a turbocharger to boost power and improve fuel economy. These new technologies, when combined with a poorly formulated motor oil, promote LSPI and threaten engine operation. LSPI is the spontaneous ignition of the fuel/air mixture prior to spark-triggered ignition. It occurs in today's advanced engines and is much more destructive than typical pre-ignition.
Original equipment manufacturers (OEMs) like GM* have addressed the issue by designing tests to determine a motor oil's ability to prevent LSPI. The GM test allows up to five LSPI events to receive a passing score. Signature Series Synthetic Motor Oil provided 100 percent protection against LSPI* - zero occurrences were recorded.
Our unique synthetic formulation is inherently stable to resist oxidation and neutralize acids. Signature Series Motor Oil provides outstanding protection against deposits common to high-temperature engine environments. The tremendous heat and stress turbos create can cause some oils to break down and form harmful bearing deposits through a process known as turbo coking. Over time, turbos can suffer reduced performance or fail altogether.
We challenged Signature Series to the GM Turbo Coking Test, which consists of 2000 cycles of extreme heat soaks. An oil must limit the temperature change within the turbocharger to 13 percent or less to pass the test. Signature Series limited the temperature increase to only 3.6 percent, protecting the turbocharger 72 percent better than required* by the GM dexos1® Gen 2 specification.
AMSOIL Signature Series Synthetic Motor Oil provides reserve protection, allowing you to go longer between oil changes if you choose up to 25,000 miles, 700 hours of operation or one year, whichever comes first*. Our unique synthetic formulation and long-drain additive system are inherently stable to resist oxidation and neutralize acids over longer periods. Signature Series is designed to deliver outstanding engine protection, cleanliness and performance over extended drain intervals - guaranteed. It provides peace of mind so you can fit oil changes into your schedule.
Oil Filter:
Any brand of oil filter may be used with Signature Series Synthetic Motor Oil. For maximum convenience, however, use an AMSOIL Ea® Oil Filter. Made of fully synthetic media with greater filtering efficiency and dirt-holding capacity than conventional filters, Ea Oil Filters are recommended for 25,000 miles/12 months or 15,000 miles/12 months, depending on application, which coincides with Signature Series' once-a-year drain interval. While Signature Series' 12-month service life remains intact if a non-Ea Oil Filter is used, the filter must be changed according to its manufacturer's recommendations.
The extreme durability of Signature Series Motor Oil ensures your engine runs stronger, for longer. We installed Signature Series 5W-30 Synthetic Motor Oil in a Ford* F-150 with a new 3.5L Ecoboost engine to test its ability to protect turbocharged direct-injection (TDGI) engines from torque and horsepower loss during extended drain intervals up to 25,000 miles. Power sweeps were done at the beginning and end of the test to evaluate horsepower and torque retention. As the graph shows, Signature Series helped maintain engine performance throughout the 100,000 mile test.
Signature Series has a uniform molecular structure that limits evaporation and keeps it where it's needed most - protecting your engine. Volatility (burn-off) occurs when oil gets hot, causing lighter molecules to burn off or evaporate. This leads to oil thickening, additive imbalance, higher emissions and oil consumption. The NOACK Volatility test is the industry standard for evaluating motor oil high temperature evaporation. It measures the percentage of burn-off after a motor oil is placed under constant airflow at 482°F for 1 hour. A lower number indicates a better resistance to evaporation. Signature Series falls far below the API limit for volatility, reducing the need for frequent oil top-offs and limiting vehicle emissions.
Signature Series Synthetic Motor Oil does not contain paraffins (wax) and stays fluid in temperatures of -58°F and lower. Extreme cold causes other motor oils to thicken, starving vital moving parts of lubrication, accelerating wear and even preventing vehicles from starting. Signature Series provides 66 percent better cold-temperature performance for easier starting, better fuel economy, improved oil flow (as seen below) and reduced wear.
We formulated Signature Series with superior thermal durability that resists breakdown better than conventional and synthetic motor oils. The Sequence IIIH Test uses the Chrysler 3.6L Pentastar engine to evaluate a motor oil's ability to resist the damaging effects of heat. The test is conducted with oil temperatures of 304°F, 100°F hotter than normal operation, to accelerate oil thickening and deposits. Despite the extreme conditions, Signature Series kept pistons clean and held thickening to only 6 percent, a minimal amount compared to the proposed specification limit of 150 percent*. This stay-in-grade performance helps maintain maximum power and fuel economy while also ensuring advanced technologies like variable valve timing (VVT) operate as designed throughout the entire drain interval.
• *Based on proposed ILSAC GF-5 Plus specification.
*All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. All products advertised here are developed by AMSOIL for use in the applications shown.
Normal Service: Up to 25,000 miles, 700 hours of operation or one year, whichever comes first, in personal vehicles not operat-ing under severe service.
Severe Service: Up to 15,000 miles, 700 hours of operation or one year, whichever comes first. Severe service conditions include commercial or fleet vehicles; excessive idling; or frequenttowing, hauling, plowing or driving in dusty conditions.
• Modified engines (non-stock), racing vehicles and vehicles using alternative fuels (E85, CNG, propane, etc.) are excluded from extended drain interval recommendations.
• Change at the vehicle manufacturer's recommended drain interval outside U.S. and Canada.
• AMSOIL Ea® Full-Flow Oil Filters are designed for extended drain intervals. Do not exceed 12,000 miles or one year with other brand filters unless longer intervals are recommended by the vehicle manufacturer. Always change filter when changing oil.
• Check oil regularly to maintain proper fill levels.
AMSOIL Ea Full-Flow Oil Filters stop smaller particles, flow more oil and last longer than regular filters. For best performance, use AMSOIL Ea Full-Flow Oil Filters.
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS).
Click here to view the MSDS Data Sheet for AMSOIL ASM.
Keep out of the reach of children. Don't pollute. Return used oil to collection centers.
|Signature Series 100% Synthetic 0W-20 Motor Oil (ASM)
|Kinematic Viscosity @ 100°C, cSt (ASTM D-445)
|Kinematic Viscosity @ 40°C, cSt (ASTM D-445)
|Viscosity Index (ASTM D-2270)
|CCS Viscosity, cP @ (°C) (ASTM D-5293
|5122 (-35)
|Flash Point °C (°F) (ASTM D-92)
|220 (428)
|Fire Point °C (°F) (ASTM D-92)
|244 (471)
|Pour Point °C (°F) (ASTM D-97)
|-53 (-63)
|NOACK Volatility, % weight loss (g/100g) (ASTM D-5800)
|High Temperature/High Shear Viscosity
@ 150°C, 1.0 X 106 s.-1), cP (ASTM D-5481)
|Total Base Number (ASTM D-2896)
Reviewed by Jesus:
Reviewed by Adan:
Did the job, truck runs really good/Better than it did with rotella. I'm surprised with results.
Reviewed by Todd:
Have used amsoil for 15 plus years. Wouldn't change back to any other oil!
Reviewed by Adam:
Helps me go longer without changing oil as often since I drive 150 miles a day for work.
Reviewed by Michael:
Truly last 25k or 1 year with out a oil change, remarkable. Three years strong, keep up the good work.
Reviewed by Scott:
Been using AMSOIL lubricants in everything I can get it in since 1985. Have never had any issues. Used it in my 1983 Ranger that I bought new up thru and including my new 2010 MKZ, 2015 F-150 Lariat and 2016 Fusion. Best in the business and cheap insurance for everything I own.
Reviewed by Robert:
Superb Motor oil. My Elantra has the best.
Reviewed by John:
Great product. Got what I ordered on time. No hassle.
Reviewed by Ron:
Use this in my new engine on my 2001 Jeep tj great stuff 👍👍
Reviewed by Jim:
great product !
Reviewed by Larry:
The best for my vehicle
Reviewed by Patrick:
I have been using Amsoil products in my vehicles for a long time and I will use nothing else in them!!
Reviewed by William:
The only oil my car is going to see for the rest of it's life!!
Reviewed by William:
The only oil my car is going to see for the rest of it's life!!
Reviewed by Craig:
I use this in my Grand Cherokee
Reviewed by Mark:
Been using amsoil in allmy vehicles for years works great
Reviewed by Carlos:
Reviewed by Jaime:
Best synthetic oil I've ever used. Makes engine run smoother and quieter.
Reviewed by Jaime:
Best synthetic oil I've ever used. It makes the engine run smoother and quieter.
Reviewed by William:
Mopar or no car! Amsoil or no Oil!
Reviewed by Austin:
Best oil out there. 3rd party testing to prove it. I'll choose amsoil everytime.
Reviewed by David:
Have used now for many years in all my vehicles! BUT the cost is getting to be too high!!
Reviewed by John:
I use this oil exclusively in my vehicle. Never a complaint. Completely comfortable with it
Reviewed by Sammy:
Been using AMSOIL products for over 20 years!
Reviewed by Robert:
Reviewed by Keith:
I use in my 2007 Jeep Liberty. I change every 12K miles.
Reviewed by Ed:
Reviewed by Everett:
Been running this oil in my 2007 Ford F150 since about 36,000 miles. Now has 317,566 and still going strong. Love the protection, changed every 15,000 with Amsoil filter as well.
Reviewed by Marc:
I swear by amsoil products. I've been using them for many years. Greatest on earth. And the company makes it so easy for you to deal with. Will never stop using their products.
Reviewed by Duane:
I use Amsoil in my three vehicles and in my 2001 Road King. In all of these years, never an engine or wear problem.
Reviewed by Jim:
Best product out there.
Reviewed by Joey:
It's the first time I've used Amsoil in my 5.0 F-150, so far so good, my fuel mileage increased, truck seems to have a lil more pep to it!
Reviewed by Ruben:
Best oil I've used by far! Been great for the F150 Ecoboost and haven't had turbo or timing chain issues because of it!
Reviewed by Steven:
Best product on the market. I love it.
Reviewed by Ron:
I have been using this oil for years! It's a great product. I won't use any other oil.
Reviewed by Danny:
Best oil on the market
Reviewed by Alejandro:
Awesome product.... Thanks....
Reviewed by William:
i believe signature series oils from amsoil are among the best you can get. i trust amsoil in everything i own. i don't feel i need to research every product for every piece of equipment, just get amsoil for it
Reviewed by Lee:
I've been using signatures TVs engine oil for the past three years I have no problem .Is the best all on the market right now and if you need your engine to lass use this oil
Reviewed by Michael:
AMSOIL signature series is awesome we also use the AMSOIL oil filter also and highly recommend these products to anyone wanting to save some money by not having to change your oil as often. We used it on our Ford Escape and at 150000 miles it was as smooth and quiet as it was new and still no oil consumption between the extended oil changes unfortunately it was totaled when a person ran a stop sign.
Reviewed by 2ManyToys:
Our truck is a 2001 Ford Expedition that we purchased new. Eighteen years later, we have never had to do any internal engine work. This is a daily driver that we can take cross country. I wouldn't use anything else!
Reviewed by Everett:
Best oil you can run period, especially in a turbo charged engine.
Reviewed by Brian:
I learned about Amsoil when I was stationed down in Arizona I've been using it now for 15 years straight and I will never go back to regular oil. I have since retired from the military but I will not retire using this product.
Reviewed by Nancy:
AMSOIL oil is all I will put in my cars. I want the peace of mind knowing my cars are protected by quality products.
Reviewed by Nancy:
All my cars are older and I feel secure with this oil protecting my car.
Reviewed by Nancy:
Love not changing the oil so often since I am a busy Grandmother. Knowing the oil is protecting my car.
Reviewed by Matthew:
Changed my 6.0 over to this oil. Starts much easier in the cold
Reviewed by Myles:
I use this in my 2010 Tundra, and don't worry about the engine at all!
Reviewed by Myles:
I use this in my 1991 Lexus with over 400,000 kms and this car is still
going strong. Never an issue with the engine itself. I don't think there
is a better oil in today's marketplace.
Reviewed by Larry:
Have been along time user of Amsoil products , never had a problem with any of the products. I have three high performance vehicles and use everything from oil and filters to brake fluid from Amsoil.
Reviewed by Cameron:
Good stuff smooth out my engine
Reviewed by Shawn:
It works great. My Jeep runs smoothly past 6000 miles
Reviewed by Bill:
They did synthetic first. It was the best then and still is. If you're going to keep your truck or car for years it's worth every penny.
Reviewed by Christian:
Reviewed by Valentine:
Replaced the eng oil with Amsoil. I could tell a difference from the get go. Amsoil is good stuff.
Have a Subbie TX with a Turbo, this is the only oil I will ever use in this Subbie.
Reviewed by Karl:
Been using Amsoil since 1980.
Reviewed by Edward:
Using this oil for past 5 years for our three Toyotas. The best oil so fur.
Reviewed by James:
Great products
Reviewed by Rex:
I have used the Signature Series oil for many years. I only change it once a year on all my vehicles which will approach 25,000 miles on average.
This is the only oil I will use and it has been fantastic!
Reviewed by Michelle:
Love this stuff!
Reviewed by Manuel:
Happy with the AMSOIL Signature 0W-20 Synthetic motor oil. Been using it for many years.
Reviewed by Brian:
I have used this oil on my 1996 Chevy Silverado 2500 since it was new. No issues with the motor and runs as smooth as when it was new.
Reviewed by Roman:
Great oil
Reviewed by John:
have used this product for 5 years and have had no related problem with this oil.
Reviewed by Jomel:
Accurate and tested to be one of the best motor oil.
Reviewed by Kenny:
Happy love it I have been using this product for years fantastic
Reviewed by David:
Since iv placed Amsoil in my car she has improved alot! I love how the oil doesnt burn as fast even with my girl having increased HP. You want better oil for your car...i highly recommend this one.
Reviewed by Steve:
work truck and cars
Reviewed by Mark:
Purchased for a Ram 2500 with 6.4 as an alternative to factory oil. Has been excellent so far!
Reviewed by Raymond:
I switched over from 5w20 to 0w30 because I use my 13 Ram 5.7 Hemi engine for towing ,this engine runs great, went on vacation this April to Tennessee, didn't Tow any thing my average millage is now (Hwy)19.2,this is Great the engine just feels good,been using Amsoil since 1988.
Reviewed by Alexander:
Right for the Tundra!
Reviewed by Alexander:
Right for the Shelby
Reviewed by Jay:
I use signature 5W 30 in my 2007 Range Rover Sport Super Charged. I will not use any other brand, the truck has had regular oil in it from factory to the 5000 mile mark, since then we have only used Amsoil signature synthetic and rightfully so the Range Rover has 245k miles and it' still as strong as the first week we owned it. Thank you Mr Amsoil.
Reviewed by David:
I use this in my new car.
Reviewed by David:
Makes my generator run quieter
Reviewed by David:
I use Amsoil exclusively.
Reviewed by Lorenz:
So i had the oil run for almost 4000 kms 24/16 hwy/city km driving everyday. I lost about eight of an inch on my dipstick reading and it looks like the oil is not gonna last for whatever you guys claimed. I will do my oil change soon and will use oem filter instead of wix see if it will make any difference
Reviewed by Dan:
Great product with great service
Reviewed by David:
I uesd amsoil in my mother car. Did a engine flush. With her oil change. When it was done. She drove to her house which is up a mountain. She notice right away how smooth the engine running. Big difference she said. Thats from a women who dosent know about different oils.
Reviewed by Roy:
Product used in 2014 Fusion HYbrid. Fuel mileage improved 3 mpg and engine so quiet you think you are on battery.
Reviewed by Roy:
Product used in a 2016 Mustang GT with Roush supercharger. 690 HP which is up from 670 on factory oil.
If you cant feel the difference using AMsoil, dont ride a bicycle, motorcycle, or fly an airplane!
Reviewed by Dominic:
My Toyota RAV4 runs smoother with better fuel economy that it did with the MOBIL Full Synthetic that was being used previously. This oil is also used in my Cummins whole house generator. Engine runs smooth and quieter.
Reviewed by George:
I know that Amsoil is relentless in producing the finest motor oil anyone can purchase for vertually any vehicle. My high performance car still runs like new with no issues using Amsoil SSO 5W-20 for the last ten years.
Reviewed by Bryan:
Every six months oil change intervals at 10,000 miles with Amsoil's oil filter. UOA came back showing the oil had plenty of life left in it. 10,000 and every six months is where I feel comfortable.
Reviewed by Joseph:
Run this in my 2016 Subaru legacy 2.5 and works well
Reviewed by Robert:
Best product, fast shipping.
Reviewed by Robert:
Heavy duty 50,000 miles year plus idling time
Reviewed by Brett:
AMSOIL customer for 20 years. Outstanding products. Best engine oil products available.
Reviewed by Duane:
Love the long life of the oil. Still retains lubrication quality after a year in use.
Reviewed by Larry:
I use it a2005 Mercury, it was what he used so I just kept using it, it has around 220500 miles on it and I think the rear seal has a little leak. I also us Am soil in my Harley and has made a difference . I have also bought it for my 93 diesel I am working on.
Reviewed by Daniel:
I been using this in a 2016 Chevy Trax from new! uses on oil @ 53'600 miles!
Reviewed by Austen:
Running smoother and cooler, hardly any burn off and keeps the inside nice and clean.
Reviewed by Franco:
Seems like a great product gas mileage improved about 1-2 miles per gallon hiway engine sounds slightly quieter
Reviewed by Eric:
I feel the AMSOIL 5/30 is the best protection for my engine.
Reviewed by Josh:
I use it in my truck and it last a long time before I have to change the oil again it pays to use the good stuff
Reviewed by David:
I like that I Can count on quality.
Reviewed by Dave:
Awesome oil,
Reviewed by Vance:
Good oil I won't use anything else in my 2018 Camaro ZL1!
Reviewed by Vance:
Very happy with this oil so far! I accumulate a lot of miles weekly and I'm tired of changing my oil every month. So I ready to pay more to get more. Keep up the good work!
Reviewed by Anthony:
I've been using this Amzoil premium synthetic oil for 2 years and have been very happy with it. My car is turbocharged and runs smooth and cool with this oil.
Reviewed by Cliff:
This product is in my wife's car, which puts me at ease, she won't have problems while traveling.
Reviewed by Cheryl:
Love it,great product.
Reviewed by Bernardo:
Great product, my Ford Transit 3.7 engine runs very quiet and smooth.
Like never before.
Reviewed by Saverio:
Great product! Won't use anything else.
Reviewed by W.H.:
It works great in my 2018 Silverado. Been using your product from 1980. Wood not uses anything esle.
Reviewed by John:
car runs with more pep
Reviewed by Stephen:
Like all things I'm skeptical, but The signature series has proven its worth both in cost and in performance. I've been given nothing but superior results by this product. Both my trucks have it in them and both run smoother and quieter and with just this change have shown better gas mileage.
Reviewed by Guenther:
use on all my high mileage vehicals...i get about an extra miles more per gallon on average per tank, so big cost savings, plus i only change oil once a year!!
Reviewed by Tere:
We love using this oil.
Reviewed by Jack:
changed oil.
Reviewed by Bernardino:
Use for Subaru Crosstrek average fuel consumption 27mpg..now 30.2mpg!
Reviewed by Jeff:
I have always used this product in my Honda Civic. My car has 168k miles on and it runs great. You will be ready for a new car before you engine wears out.
Reviewed by Romie:
Since I used this product I'be been changing my car oil every 7000 miles and the oil is still free flowing even @ 7000.
Reviewed by Michael:
I have put nothing but Amsoil in my vehicles. This is for 2018 Denali with 6.2 liter. Try to keep it running like new for years to come
Reviewed by David:
Have used it for years and works great
Reviewed by Joey:
Was nervous about using thicker oil in Prius, but glad I did. With my miles getting higher, Amsoil has done wonders to my car. Going to continue using all Amsoil products for my vehicles.
Reviewed by James:
Outstanding product that I have used in my 2012 GMC Terrain V-6 since I purchased it 89,000 miles ago. I change once a year and put about 12-15 thousand miles per year on the car and the EA filter. Never any issues and NO significant oil loss each year.
Reviewed by Doyle:
Great product, it's a 2 hour round trip to do a oil change in my rural area. Doing it myself + the extended service miles is very welcome.
Reviewed by Perry:
Used to use other top tier oils and after hearing that Amsoil is real 100% synthetic oil and not that bogus misleading "Full Synthetic" I switched to the real 100% synthetic Signature Series 0w20, Started doing my own oil changes on my Lifted truck, found that other oils at 4K miles were literally black but Amsoil was much lighter in color proving that it takes much more abuse. Amsoil is a Super Oil
Reviewed by Blake:
Great product!
Reviewed by Rafael:
Put it n my mustang and works amazingly!
Reviewed by Leo:
I have to say its is the best I ever used, but I want to have the oil tested to what is going on in my cars engine, as I said my car is running smoother than ever I still think it beats all other oils.
Reviewed by Ty:
Great Oil
Reviewed by Ty:
Great oil. I have over 200000 miles on my SUV
Reviewed by Frank:
I put a 5/30 in my 2016 eco diesel. It's the best oil on the market for that Ram
Reviewed by Robert:
It's all good ! When you run with the Best you can forget about the rest
Reviewed by Kenneth:
Excellent product!
Reviewed by Marty:
The best of the best
Reviewed by Richard:
This is the only oil I use-and always will..........................
Reviewed by Raider Rodney:
I researched oil and tests for years before deciding on going with Amsoil's Signature Series for my DSM. The testing speaks for itself, less wear, better performance...period.
Reviewed by Dan:
Only once a year, perfect, saves time and money, the old stuff comes out cleaner than conventional oil would, and I know it would last longer.
Reviewed by Lance:
Used in my wife's 2017 Ram 2500. Switched a year ago and noticed increased mpg. Great product!
Reviewed by Henry:
Use n every vehicle I have for many years. Great products
Reviewed by Joseph:
Use this in my daughters honda civic she loves the once a year oil changes
Reviewed by Gene:
I use Amsoil Signature Series oil exclusively in my 2007 Expedition and my 2010 F150. Love the protection and improved performance in both vehicles.
Reviewed by Jayson:
Great product....great protection.
Reviewed by Keith:
Use this oil in my 2003 S-10 2.2 and have 576,198 miles original motor
Reviewed by Juan:
I love this oil. I will be using this oil on my wife's vehicle next oil change. The only thing I don't like is I need to add 1 to 2 quarts of oil before the next the oil change. Over all LOVE it.
Reviewed by Peter:
I use AMSOIL products---particularly oils in every vehicle that I have owned since 1968! This is an excellent product. I have never had a hitch or failure using ANY of the products. All my relatives and friends are convinced converts! It is comforting not to have any worry about your lubricants, regardless of their use.
Reviewed by Tony:
I switched to Amsoil full synthetic after experiencing some sluggish cold weather starts using the competitors conventional oil. Now I have quicker cold weather starts and great warm weather protection. I have not only switched my trucks to Amsoil but also my boat and four wheelers.
Reviewed by Rod:
Great product
Reviewed by Rodger:
Love the product. Vehicle runs cooler and sounds quieter.
Reviewed by Bruce:
Awesome product
Reviewed by Big B:
Ams is the best oil I have used totally sold on the product
Reviewed by Steven:
fill it out for me
Reviewed by D:
Fantastic product. I use it in my Ridgeline. I opened the oil cap just to look around, the inside of the engine looked new even with over 100,000 miles. Never uses a drop.
Reviewed by Bud:
I own a Range rover sport 08 and started getting timing chain noise for a second or 2 after start up after switching to Amsoil the noise went away and my oil is much cleaner now.
Reviewed by Mckenney:
I used your oil more than 15 years, now my car run like BRAND NEW (My car Is Honda Accord 2008). Thank you.
Reviewed by Apex guy:
Great product, my engines look great when I open them up! I run amsoil in two turbocharged cars and a streetbike. Track days, canyon roads, daily driving, it's great for it all!
Reviewed by Whitetundra18:
I have been using Amsoil products for over 20 years.
They have never let me down and I truly believe they save me money in the long run.
Reviewed by Ace:
Been using for last 5 years. Stopped my old engine from knocking, and went from using oil to not using when I switched to Amsoil.
Reviewed by Joe:
Very good product, I use on all my oli changes.
Reviewed by Persistent:
As long as Amsoil continues to win the comparison tests against the competition, I will continue to purchase this product. The pressure is on Amsoil!
Reviewed by Matt:
2017 Taco TRD offroad 4x4.
I have just over 2500 miles on this oil now and have seen real MPG gains, granted very slight ( just over 1 MPG gain). My truck definitely runs better too.
Reviewed by huffy:
I have a 2010 minivan that used 1/2 qt. per 1000 mil. after using
5w-20 signature series motor oil it now uses none "this is the good stuff!"
Reviewed by Pat:
I initially ordered the transmission fluid and accidentally got the engine oil. After returning the engine oil and receiving transmission fluid signature series, I must say how pleased I am. I noticed the few MPG improvement after changing the transmission fluid which had 43K on it. The engine shifts through the gears more smoothly.
Reviewed by My bader:
I put this in my wife's
Audi and my Range Rover sport better engine protection and best oil you can buy.
Reviewed by N/A:
Great oil, everything advertised is accurate!
Reviewed by shorty:
my truck has 256000 mile run like new
Reviewed by NVTGhost:
Keep my car in Tip top shape.
Reviewed by Torque Man:
I use the oil and filters in my muscle cars and truck. The click everyone complains about went away in the motors .Easy startup on the motors and no dry lifter sounds.
Reviewed by stanger:
Greatest point is that I only need to replace the oil once per year as I only put on approximately 25-30,000 kms per year.
Reviewed by Cgc:
Seems good....engine hasn't blown yet.
Reviewed by HICSMMA:
I use all Ams in all my toys and cars! You get what you pay for. This is the best.
Reviewed by Jeff:
When trying to go the full 8000km between oild changes typical synthetics do seem the break down around 6000km, You can tell but the return of valvetrain chatter even faintly after startup. I've noticed the Signature series holds up and I no longer hear that return as the miles / km's increase. Great Product!
Reviewed by Guilty-Crown-:
The title says it all been buying for a long time for multiple different vehicles never fails
Reviewed by Mark:
Have used this oil for 20 years along with EA filters on my vehicles.
Reviewed by Gallaticus:
I use Amsoil Signature Series Synthetic oil in my 2011 Toyota FJ Cruiser along with many other Amsoil Products and I will never look back. I change my oil and filter every 10,000 miles. I go 25,000 between oil changes on my daily driven 2006 Pontiac Grand Prix. My FJ Cruiser sees a lot of towing and off road use so I change it more often than recommended; although I'm more than certain it could handle the 25,000, no problem.
Reviewed by HollisJR:
My Honda CRV runs great on this oil. My mileage has increase and it just runs smoother. I highly recommend this oil. The best in the business.
Reviewed by none:
Best in the business
Reviewed by Zac:
Look at any proper sheer test and this wins. The only oil I'll trust in my boosted built engines!
Reviewed by Bryan:
Wonderful product I could tell as soon as I started my vehicle it sounded much quieter and I'm getting a little over a mile and a half better gas mileage.
Reviewed by RJ:
Had a slight tapping noise coming from my engine, after a oil change and new filter will AMSoil the sound was almost unheard, after a few hundred miles the engine is purring like a kitten : )
Reviewed by Eddie:
Why because it is the best. Period! Amsoil is the best product company in the nation. Their staff are courteous knowledgeable and will research the items best for your vehicle upon your request so you would get the specific items.
Reviewed by Woodmansk:
Is there a better oil?? I think not
Reviewed by Big Red:
I love this product only the best !
Reviewed by meg:
better than the oem recommended
Reviewed by Bill The Finn:
11 out of 10
Reviewed by O-tie:
I have used 5w20 for many years in our f150 ford trucks and will continue for many years to come
Reviewed by Capgoat6:
This oil has always delivered the best protection for any engine. It keeps camshafts and other engine parts from ever having a metal to metal issue.
Reviewed by Bob:
Been using Amsoil since 1996
Reviewed by Honda:
I would not hesitate to buy several cases of this my car runs great since I started using this don't hesitate to buy
Reviewed by Mike:
You can feel the difference compared with other synthetic oil
engine runs very smoothly
No need to add any oil for thousands of km
Reviewed by Vette71:
Best oils ever. Used for years.
Reviewed by Jimi:
This is the best synthetic motor oil I've ever used. My 2007 Toyota Camry V6 sounded and felt smoother than before. That's what 100% synthetic Amsoil does for your vehicle. I will be putting Amsoil on my 2010 Lexus ES 350 as well. Amsoil on my vehicles only.
Reviewed by Lance:
Its such a good product, it has done me good all these years i will be buying more in the years to come.
Reviewed by Steve:
I use this in my racecar and it's the only oil I'll use.
Reviewed by Bill:
I only use Amsoil full synthetic oil in my vehicles. This includes my motorcycle.
Reviewed by Dman:
Holds up very well for changing it out every 10,000 miles. No burn off like other oils.
Reviewed by Harrison:
Sorry haven't got enough run time yet but I changed everything from mobill1 and Harley to your synthetics
Reviewed by Brad:
Best oil on the market hands down... tests prove it and the protection speaks for itself! I wish I had switched a long time ago because it would it saved even more life on my engine. 1999 Honda Accord with 250k miles on it and it runs like new! Thanks amsoil! Well worth the extra money because you save it from having to change it once a year!
Reviewed by None:
I use to do a lot of driving . All my vehicles had 400,000 + miles on them including one Suburu with 505,000 only reason still not driving was not the engine but the rust eating the frame and body due to heavy salt used in winters .. .used the 25,000 oil change 10 -30 signature and 15,000 mi oil change filter . Changed oil and filter every 15,000 mi . Only added Extra half qt to qt at around 13,000 mi. Been a user since 1980's wouldn't use any other oil .
Reviewed by Joker:
Best ever, been using for years and have plenty of people switching as well. Great product.
Reviewed by Mopar16:
This oil is amazing I use it on my hemi 6.4 and everyone know about the hemi tick but with this oil I don't hear it at all so I love the oil I am sure the tick is still there but the noise is very low.
Reviewed by Flyer:
I developed an oil leak which when discovered had depleted four of six quarts of amsoil which I believe prevented some serious engine damage. I have used this product in my F-150 Edoboost since 5000 miles and The truck now has 174,000 miles. Can't say enough about this great product!
Reviewed by DS:
I'm very impressed with this oil. I thought the gas mileage might go up a little but it went up by over 3 miles per gallon. I've checked it for 4 fillups since the oil change and it actually got a little better. I will be checking it for color change and oil life. It's great so far.
Reviewed by Jc:
Use in car and truck. Works great.
Reviewed by Mr. Preventative:
My truck runs so much better, and oil changes done once a year now.
Reviewed by LOU:
Keeps everything running cool and smoothly. My go to..never use anything else.
Reviewed by John:
My vehicle engines have lasted a long time and I get better gas mileage to boost.
Reviewed by Joe P.:
I am a part time rideshare driver and have averaged over 22,000 miles a year. I go 10,000 miles between oil changes and have almost no burn off or evaporation. Have used Amsoil for 30+ years to protect my vehicles. Great stuff!
Reviewed by GW:
I've been using the product for many years and trust Amsoil for all of my equipment - car, truck and all power equipment.
Reviewed by Popgun:
... in every vehicle I have owned, new or used, and will continue using Amsoil as long as I have a car! Never had a problem even though I changed the oil annually. One service tech even asked why I was changing the oil since it was so clean! That's Amsoil, that's quality!
Reviewed by KC:
As always, Amsoil produces great products for our "fleet' of vehicles ranging from SUVs, motorcycles, and trucks. Customer service is unparalleled.
Reviewed by Dave:
AMSOIL 0w-20 Signature fully Synthetic Motor Oil. Been using this oil in my vehicle since I purchased it.
Reviewed by Bob:
I have used Amsoil in all my equipment for many years. I still enjoy changing my own oil and maintaining all routine maintenance myself. I appreciate being able to to go an entire year without another oil change and doing the work myself. I use this oil in my street rod, full size suv, 4 stroke outboard boat and gearbox, plus all of my outdoor lawn equipment. I also use Amsoil 2 stroke oil in all of my lawn equipment including a 1976 Homelite chain saw that has never been overhauled that still runs very strong.
Reviewed by Mr. Z:
I received fast shipping on a great product! Thanks Amsoil!
Reviewed by Golden Eagle:
I have used Amsoil Signature oil in my business car. Today with over 400,000 miles on it.... Still running like new! No other oil even comes close to the protection and value of Amsoil Signature!
Reviewed by Jeff:
My vehicles run smoother, with less vibration, and are quieter. The also run about 10 degrees cooler than they do with other oils. And, my gas mileage went up about 3 miles per gallon.
Reviewed by Seabee624:
I change my oil once a year roughly 12,500 miles
Reviewed by Squire:
I Like the throttle response with Signature Series Amsoil !
Reviewed by crazy joe:
We use this product in all my Jeep Cherokee Sports 1999, 2001, 2003 Grande Cherokee, and a 2004 Durango SLT 5.7 Hemi. They all run great and have a lot of miles on them. We also have a couple of old race cars and use it in them, if we get them out. We are hard on our cars and use them we are not granny drivers by any means the 2001 Cherokee only has 157,000 on it but we are going to start to use it daily as of tomorrow. the others are all used every day.
Reviewed by Krzysztof:
This oil last long time and the inside of the engine looks clean and really smooth. Great product and works magic. Thanks
Reviewed by Whitey:
I believe this to be the best motor oil.
Reviewed by Amsoil since 1983:
Order was easy. Shipment was right. Product is great. Customer service was awsome.
Reviewed by Scott:
Shipping was prompt and everything came in as promised
Reviewed by Birdman:
Great quality oil and filter - less oil changes and the perfect protection for the engines on my vehicles.
Reviewed by Harley:
I aways use amsoil products after I used this oil in a car of mine that had a ticking valve when it was cold for carbon buildup The Tick went away never came back.
Reviewed by Rosa:
It has been working excellent and we will always recommend this products to our friends and family.
Reviewed by Dave'sAuto:
5.3 engine in my wifes `16 Suburban is smoother and quieter with the Amsoil 0w-20 SS. I was running good oil before, however this one seems even better.
Reviewed by Rich926:
The absolute best oil I have ever used.
Reviewed by Grandpappy2002:
Best oil I've ever used
Reviewed by Ron:
In my truck
Reviewed by Welderguy:
My Engine has never ran so smooth! Engine temperature runs slightly cooler as well. I couldn't believe it till I seen it! Want a vehicle to last longer just treat the engine with this oil.
Reviewed by Greg:
I use amsoil for all my oil changes to have the best for my hemi/Ram
Reviewed by Pappy's Performance:
I researched all the oils and for several years Amsoil is the only oil I use in my personal vechicals and my customer's motorcycles.
Reviewed by JB:
Best in class product!
Reviewed by G-Money:
Have used in 2004 Toyota Sequioa, 2004 Toyota Tundra and 2010 Lexus RX350. This oil does not sound nor feel like any other synthetic I have used in the past, engines just seem to feel more lubricated and ready to perform, even at 10,000 mile changeout intervals, though I know the oil is formulated to go much further than that. Best oil I have been able to find for sheer ratings/high PSI strength...best oil I have ever run period.
Reviewed by SQUIRE:
Reviewed by C 150:
Ask any knowlegable mechanic, they all praise this product.
Reviewed by Mark:
This I used it my John Deere. I put it in the automatic transaxle. Much quieter now, and faster.
Reviewed by John:
Reviewing motor oil is a slippery topic. There is no way to determine if there is less wear and tear on the engine, but it looks delicious coming out of the container!
Reviewed by Ricky:
I use it in everything I own
Reviewed by Rane:
I can't say anything bad about this oil. Our 2016 Mazda 6 has had zero issues from the drivetrain. Zero issues with anything actually. I changed the engine oil and trans oil(manual) out as soon as I got the car home with less than 50 miles on it. The only thing I do that's not amsoil is add Liqimoly because the factory oil for our engine requires a high moly content. I change the oil every 15-20k and top off every 3-5k. The engine looks very clean inside the crankcase and under the valve cover. It still runs as smooth as the day we bought it and no leaks at 130K. I also use this oil in my brand new Tacoma TRD off road 4x4. I refused their complimentary free oil changes and stuck with what I know is a higher quality product.
Reviewed by DudleyDoRight:
I purchased Amsoil for my 3.6 LFX V6 Camaro. I went about 6k miles and changed the oil in the engine. I sent out a sample to an oil analasys lab and the results came back great. They recommended going 8k miles before changing the oil again because there was still plenty of "life" left. I will continue buying Amsoil.
Reviewed by Hollywood:
My turbo forester runs good with this oil
Reviewed by D.J.:
Great Product , Fast service, good price
Reviewed by Moose Man:
I use this in all my vehicles. Bought a 2006 Honda Civic new for my son. He still uses it and it has 350,000 Kms and the engine still runs great. Always use AmsOil filters
Reviewed by Dan the man:
I've bought this oil after watching YouTube videos of it beating out the other oils people buy. I usually do royal purple but not anymore. This oil cause less wear and tear and my car runs more smoothly. The best part is it's 100% synthetic. Royal Purple isn't. Great product. Definitely going to buy again.
Reviewed by wayno bam bam:
Just sold my 07 Prius with 200K. Used 1 quart in 19K as topping oil. Never had the head or covers off, changed plugs twice.
Reviewed by JAS:
I have been using Amsoil for 25 years and never had engine issues. Great products!
Reviewed by RonV:
I have been using Amsoil for over 30 years and think it is the greatest. I use it in all my cars, mower, and mix the marine oil with gas to run in my chain saw, weed,eater, and hedge trimmer. I recommend Amsoil to everyone who will listen.
Reviewed by Aaron:
Doesn't burn off like other oils this stuff is amazing
Reviewed by rolo the mech:
use in all personal vehicles and equipment
Reviewed by Uncle T:
I first started using Amsoil 10w40 in 2015 in VTX 1800. Then in 2017 started using oil in 2014 Patriot. Cooler, quieter and better mileage. Longer intervals between changes. Will not use any other oil in any machine I own as long as Amsoil makes it.
Reviewed by Rick:
I keep buying this product because I now have 379,000 miles on my factory 1.4 turbo GM motor
Reviewed by Jake's toys:
I use Amsoil in all my motors
Reviewed by Nick P:
I mean its a really gold Oil and as a memeber you get It for the same price as anything else on the market. How do you go wrong. I got 300k on my car and still going strong because of this stuff.
Reviewed by kevin:
i use only Amsoil signature series for the past 20 years. the best lubrication, protection and no gumming.
Reviewed by carlistilllo:
i use only the best oils, and this one is one step ahead of everything ,car runs smooth, cooler and much efficient ,thanks!
Reviewed by Daddy Plummer:
I use this oil because of extended oil changes .... I change mine
every 10000 miles but rated at 15000 miles. Currently have over 240000 miles on engine and have used it since new so very happy with engine life
Reviewed by California Nordahl:
I have been using AMSOIL in my vehicles for 37 years, for better fuel economy, better engine, transmission, and rear end performance, and much better protection for all vehicle components. I love this new oil upgrade for its protection, particularly against preignition. Pulling a trailer in hot summer weather with a turbo engine makes this kind of protection mandatory.
Reviewed by ocdpops:
Have two 5.7 hemis. One is higher compression with forged pistons( ie: burns a little oil). Oil consumption with Amsoil is 50% of other oils. valve train is noisy on 5.7 hemis. Using Amsoil reduces noise 75- 80%. MPG on both vehicles has increased.
Best oil I have ever used.
Reviewed by Steve:
I've got a Shelby GT350. Voodoo engine is very special, and also very expensive to replace. While I can't 100 percent say amsoil has kept me out of trouble. I've beaten the tar out of the car at the track and barely consumed oil unlike many others. Will continue to use the product on this car!
Reviewed by USAFVet:
I have used Amsoil products, exclusively, pretty much since I first heard about them back in 1977! Motor oil & filters, trans fluid, differential fluid, grease, MP, YOU NAME IT! I have NEVER had a lubricant-related failure, or wear-out, since! These are simply THE BEST LUBRICANTS MONEY CAN BYE...PERIOD!!!
Reviewed by Jodster:
I have 442,000 miles on my Nissan truck, (original engine) using amsoil 10w30; I change the filter every 6,000 miles, and the oil around 12,000, (usually). In fact, I just had to replace the original (!) valve cover gaskets last fall, after 14 years! Amsoil does the job
Reviewed by Chuck:
Using this product in my wife's grand caravan
It's always on the go So I love the long interval between changes and I know I can trust Amsoil products to get the max miles out of the vehicle
Reviewed by KentuckyKen:
I have a 2018 Honda Clarity Plug In Hybrid Electric Vehicle' (PHEV). Most of my driving is local (< 50 miles) and uses the battery only so the gasoline engine can go months at a time without starting. I depend on the superior additives in Amsoil Signature Oil to hold up to the demands that only occasional engine runs with long periods between running places on the oil. With my driving schedule, Honda allows me to go 1 year between oil changes and I wouldn't trust that interval to anything but Amsoil.
Reviewed by Terryg:
This oil is absolutely the best product, I've been using Amsoil for more than 30 years and this is without a doubt there best product ever for most cars and trucks
Reviewed by Collector:
Best oil on tue market. I run it in all of my vehicles and I don't trade much so they have to last. From motorcycles to cars. Big trucks to small suvs, I trust only AMSOIL.
Reviewed by CDC:
Use to keep from changing oil so often
Reviewed by Muxdragon:
I drive a 2011 Tacoma. I change my oil yearly. I've only used this oil for all the oil changes. After a year, the oil on the dipstick is still gold after 15,000 miles. I do notice that at the year mark it need to be changed. The reason is because when I pour in the new oil the motor runs smoother. Great oil! It does what it says it does.
Reviewed by jeffro:
Have a 2006 Rav4 with V6 engine. Been using Amsoil's best oil (Signature 5W-30)and EA filters since the car was almost new. Vehicle now has 233,000 miles on it and does not smoke, burn oil or have any leaks. Still runs as new. Do my own oil/filter changes and do so at approximately every 15,000 miles and/or at least twice a year. The ambient temperatures can easily rise above 90 degrees and the AC is used daily. Do a lot of rural/highway driving and for half the life so far, stop and go city driving.
My other car is a 2000 Miata with almost 200,000 miles. Same scenario as above but I don't put as many miles on the car per year. I change the oil (Amsoil Signature 10W-30)and EA filter yearly. Changing the oil on this car is a pain because of how one must contort to get to the filter while laying on my back under the car. So changing it once a year is a big plus. This engine does leak a bit out of the rear seal before the manual transmission. Can make 2500 mile cross-country trips at highway speed and use maybe a little under 1/2 quart (from the full mark on the dipstick).
As an old school "shade-tree" mechanic I highly recommend these oils and the EA(Amsoil) filters. The web-site is very helpful too, as are the staff with any verifying questions. I believe I save money both in the short and long run.
Reviewed by DC:
switched to amsoil years ago on a truck with 250000 mi.
lifter noise went away still runs today
Reviewed by Rubicon owner:
I have been using Signature Series oil in my trucks for years. When it is a new vehicle I switch at its first scheduled oil change. On a used vehicle, soon after purchase. I had a 2001 Silverado 5.3L purchased used with 22000 miles. Switched to Signature Series and drove it to approx. 98000 miles. Gave it to my son who went to around 150,000. Sold it they put about another 10000 on it and sold it again. Last I knew it was rusty but still running strong. As far as I know It has had no major engine work.
Reviewed by Rich:
Most complete motor oil ever,will never put anything else in my 2017 Chevy Silverado.
Reviewed by Huck:
I use the Signature 5W-30 motor oil in my 2014 Hyundai Elantra Sport. I was surprised the first time I changed the Amsoil Signature motor oil as to how dark the oil was when I drained it. Then it hit me that the synthetic oil was cleaning the engine from where previously the engine had only seen a multi-weight oil. One other thing I noticed is the engine temp. shows the motor is running cooler than it did before I started using AMSOIL.
Reviewed by Chardog:
My family has 4 vehicles and they all have Amsoil in them. I highly recommend using Amsoil.
Reviewed by Martin:
I have been running this oil in all my vehicles for several years, and have been very satisfied with the performance of the oil.
Reviewed by Malcolm:
Loving this oil
Reviewed by don:
i use amsoil in my truck, engine,rear end, trans, and my motocycles engine, trans clutch and i totally rely on it. my truck had a howl in the rear end when i would back off on speed after changing the rear end oil to amsoul it stoplped i love amsoil and highly recommend it to all my friends.
Reviewed by Joe and a Subaru:
So fare so good, I put amsoil in my 2016 Subaru impreza and she runs like a champ just like my 06 Chevy Silverado.
I have been running amsoil in my 06 Chevy Silverado for a few years now and I have seen the benefits both in overall preformance and reliablilty, it has transformed from a ticking tapping noisy engine to a quiet and smooth running one, you can't even tell it's running most days, the truck only has 100,806 miles on it but I wouldn't put any other oil in it, as soon as I try it start the lifter tapping thing again it is kind of weird in my opinion so I think its safe to say that this truck likes its amsoil.
But i thought to my self why not put it in mysubie and get the same benefits as the truck. Both vehicles have amsoil in ever oil driven/gear driven component and I am a believe in amsoil. I am think about trying it I'm my lawn mower this summer and in my snow blower this coming winter. Why not lol
Reviewed by Big Dawg Corvette:
Run this oil in my 2002 corvette road race car. Dry sump engine, need the best protection. Great oil and has not let me down! Thanks Amsoil!
Reviewed by Austin:
This oil exceededs my expectations by far. Before using this oil I would always have a faint ticking noise in my valve train. After using this oil it is so quiet i couldnt belive it. The oil life itslefs last an incredibly amount of time as well. One of my favorite things about amsoil ut leaves behind a small film of oil after u shut down your engine. So when u start back up it still has a small flim to protect your engine intell the oil is pumped up. I use amsoil in ever one of my vehicles
Reviewed by Ken_FJCruiser:
I trust this oil and the other Amsoil products because they work. I know that the maximum vehicle life and best operating effectiveness come from due diligence in maintaining it properly. There is great comfort in knowing I didn't compromise with the products I used. Keep rolling!
Reviewed by IndyCarDriver:
Have been using this product for about 9 years on both new and used vehicles. With extended mileage, I only change 1X per year. Cars have performed flawlessly.
Reviewed by jazool:
Our Subaru hemorrhaged out all of it's oil on a trip (16 miles) to our Mechanic. He later called us and asked what type of oil we used. When I told him Amsoil Signature Series, he said "keep using it; you were totally out of oil !!". Using it for 20 years now. Never had an oil related failure.
Reviewed by Larry:
I use Amsoil in all of my vehicles (4) and I believe that's why they perform and last a long time!!!
Reviewed by Phil:
I have used this product in my 2009 Civic since it was new. Now with 195000 miles It has never been in the shop except for tires and brakes and 100000 mile spark plug change. It still runs like it did when it was new.
Reviewed by Ramblin Roy:
The SS 0W-20 works awesome! I just wish it were a little cheaper in price, even with the PC, it is still a little bit high in my opinion. However, it is a great 100% synthetic oil. My 2015 Silverado with the 5.3 V8 runs a lot smoother and has more power with this SS oil in my opinion.
Reviewed by Fender Bender:
I've been an Amsoil PC for around 10 years now. I love Amsoil products and so do all my machines! There is no better value for your money. I have never had any engine problems in anything I have poured this liquid gold into. My wife's 2013 Toyota Rav4 loves it!
Reviewed by BW:
I use Amsoil in all of my vehicles as recommended. We just handed down a 2003 Toyota Matrix with over 200,000 miles on it to our Granddaughter. This car was still of high quality even though it was used daily on dusty and dirty farm roads; as well as highway. I hope she gets another 100,000 miles or more.
Reviewed by Gene:
Have used this oil on two of my trucks one has over250000 miles and still going strong. Love this oil,use it in my motorcycle too.
Reviewed by Gene:
I use it in my car and when I change oil it still has a great consistency
Reviewed by Floyd:
This oil I use in our 16 Escape, to better protect it's turbo. Living in Wisconsin it can be well below zero in the winter, and what a difference Amsoil synthetic oil makes.
Reviewed by Herby-Dean:
Nothing but good to say about amsoil products.... they are the best!
Reviewed by Bigred911s1:
I'm finding this oil looks cleaner and it's viscosity appears to hold up longer than Mobil 1 after the same 10k miles. I will continue to use this oil in my 2016 Mustang GT. 52k miles already and still running strong.
Reviewed by josh:
I run this oil in my 79 Chevy k10 and change it once a year with a fresh oil filter mid year my speedometer doesn't work so I don't have to worry about changing the oil every 3 months I am really pleased with this product
Reviewed by Ray:
I have been using these products for more almost 30 years. I trust them.
Reviewed by sparky:
I have been using Amsoil for at least ten (10) years, it's a life, and engine saver!
Reviewed by Rob C:
I've used the Signature Series oil in everything from a well-modified 99 Neon that routinely saw 8k rpm to my wife's turbocharged Ford Transit that takes our kids everywhere, and it's never let us down. I would conservatively put the amount of mileage we have on this oil over the last 20 years at 350k miles, and that's a lot of saved money in oil changes by using Amsoil's extended change intervals. I've never had a problem with any engine having oil loss issues, either, no matter how hard I ran the motor.
Reviewed by Todd:
Works great in my wife's Buick Verano. I also use the 5-30 and 10-30 signature series in our GM pickups. My 2003 Silverado has 293,400 miles and doesn't burn a drop of oil! Bought it with 90k on it and has had all Amsoil fluids in it ever since.
Reviewed by Bradley:
This oil works great with E85... Best I have found from the major brands.
Reviewed by Tom:
I used to be very sceptical of synthetic oil so I decided to try it in my company truck(not my company). The truck ran up 200,000 miles and still running strong with minimal oil consumpsion. My wife has a growing cleaning business and I do the maintenance on the cars. Using Amsoil I went from 5,000 mile changes to 15,000 miles using the Signature Series 5W-30.
She now has fifteen cars in her fleet, that cuts my oil changes from forty five to fifteen, that is a tremendous labor savings for me and it actually saves money. I use Amsoil in all my vehicles now and it keeps them running strong. I recommend to anyone that asks that they need to try it out. Great Product
Reviewed by Jim:
When I buy any vehicle, I change to Amsoil Signature Series the first oil change and use nothing else thereafter. As a volunteer fireman, my vehicles are subject to being run at high speed while cold. Signature Series provides outstanding protection. Some have over 200,000 miles on them and none use oil.
Reviewed by Tim:
Modern GDI engines require excellent oil to stay clean and handle everyday extremes. If you are using your cars maintenance indicator you might be exceeding other oils capabilities I know signature series gives me the best I can get
Reviewed by Goose:
I run this Signature Series 5w-30 in nearly all my vehicles. Typically I see a 10% increase in gas mileage ( over an engine ran on conventional mineral oils ) on the interstate no matter what size engine. In one recent event, I blew a head gasket on a Quad 4 engine yet drove the car for about 10 miles. Observing the chocolate milk colored oil, the engine was not damaged as it was protected by Amsoil Signature Series lubricant.
Reviewed by JR:
Yes Amsoil oils are more costly that many
other oils. I keep my vehicles for decades
and want the best oil protection I can get.
Reviewed by Ian:
I use amsoil don all my vehicles
Reviewed by Robert:
I have used only Amsoil in my 2005 Toyota pickup.
I now have 205000 miles. I have never had a problem
and still us no oil and have no oil leaks.
Change every 25000 miles.
Reviewed by Dink:
Hi. I am totally sold on Amsoil ! Superb protection. Awesome lubrication. Even in a little engine overheating, it still protects ! I reccomend it to the world ! Nothing beats it ! Nothing !
Reviewed by Pat:
I can't think of anything negative to say
Reviewed by Chieftom:
In my personal auto's
Reviewed by Pistol:
Made the engine run so quiet
Reviewed by Dayjoe:
I don't remember how I got started with amsoil oil. I use it in all my motors. The 5w 30 is the one I use in my 2003 Chevy pickup. It was making a loud ticking noise before I started using amsoil in it. As soon as I started using it I could tell a noticeable difference and smoothness and the ticking went away so I'm very happy.
Reviewed by Kevin:
Best oil on the market.
Reviewed by Virped:
It goes in my 3.6VVT and my 5.4 2V and does wonders for engine noise, oil change intervals, and most of all performance! It doesn't matter if it's a modern engine or not so modern engine, it Works!
Reviewed by Trouty:
You can put any oil in a new engine and call it good. I run my cars 200k+ that's when oil matters. Amsoil cools,cleans, seals and lubricates better than anything I have used and I have tried them all.
Reviewed by Brandon:
I drive for work 1,000 miles plus a week, I use Amsoil in my car along with my wife's... I have right at 300,000 on a 2012 Kia Soul and the motor is just as good and clean as the day I purchased. I save money as well... using any other other brand is crazy
Reviewed by Guardian:
It's the best hands down! Some people think it's all the same ! There wrong! 25,000 miles you can not bet it.
Reviewed by Larry:
I have used AmsOil exclusively for over 20 years. It's the best there is. My truck loves it.
Reviewed by Jerry:
I use in my 1999 Corvette because I like to use the best, and also in my 2016 Dodge pickup.
Reviewed by Paul:
I use this every 5k miles. The car runs smoother and quiter than my previous oil changes. It doesn't lose it's slickness. I'm overall satisfied with this oil.
Reviewed by cheyfinn:
cars' trucks' & motorcycle, lawn mower, snow blower
Reviewed by Brad:
This is the best oil I have ever used in my Ram 1500.
Reviewed by Chris:
First thing I noticed right away was how it make an already smooth engine even smoother and quieter. I've always used Mobil 1 advanced 15k oil and have heard nothing but great things about Amsoil. A co worker of mine had a teacher in tech school who used to rebuild his engine every year after racing season. He switched to Amsoil and hasn't had to rebuild it in 5 years. As soon as I heard that I was sold. If you want the best Amsoil is it.
Reviewed by Road runner:
I have been using this product since vehicle was new and have had no issues with my vehicle. Engine runs great and strong and I change about every 15K vice 25K as put a lot of miles on this vehicle.
Reviewed by B:
I love this brand of oil and been using it for the past yr on mustang.
Reviewed by The Capt:
I have used this oil on my cars, trucks, and sedans. Never balk at the cost, knowing darn well I'm getting what I pay for. Less oil changes, frees up time, less waste, and superior protection.
Reviewed by Sam:
Last truck had 175K and never used a drop of oil. Change oil, run 15-20K and still full.
Reviewed by Watercooled:
After breaking in our two new 2017 Mustang GTs, performed oil/filter changes on both. The two things I noticed was quieter engine operations and a small increase in oil pressure. The engines also ran smoother than before. Overall, I'm very satisfied with the notable differences I've experienced.
Reviewed by Mark:
Best Around enough said
Reviewed by Cole:
I have been using this oil in my 02 siverado and 02 suburban since 04. 297k on the truck and 317k on the sub. Oil is changed once per year, have had 32k in one year on the truck. Engines still run great and have no oil consumption, increased fuel mileage seen on both. I don't use anything else
Reviewed by dodgehunter:
I used this on my 2002 Tahoe the oil at 3000 miles looks like new yet. In the very cold weather here in ND it start right up. Vary pleased with oil. I will be doing all the fluids in my Tahoe with Amsoil.
Reviewed by D.K.:
Unless I can't afford it Amsoil will be the only oil I use. It is very good and while some people say it is more expensive, they are usually comparing it to cheap oil, it is worth every penny.
Considering the extended service length it is great.
Reviewed by Dudewayne:
Been using this oil for several years now and get great results from it
Reviewed by Snarkman:
Been using Amsoil for decades, in everything I drive. Have over 2 million miles in a Semi with Amsoil. Increased life of every component . I pushed it to the limit , never failed. And I push hard ....
Reviewed by Carlitos:
I like taking care of my cars that's why I use Amsiol
Reviewed by JW:
I've been using Amsoil since 1998. I've had to replace the intake manifold gasket on past pickups, when the mechanic ask me if I cleaned the inside of the engine before bringing it in I said no, I use Amsoil full synthetic. He said well the inside of the engine had absolutely no carbon buildup. He said that was the cleanest engine he had ever seen that had 110,000 miles on it. From that day forward he too was a Amsoil customer.
Reviewed by D Grim:
I drive a 2009 HHR with a 2.0 NA 4 cylinder engine approx. 100 miles a day and have 160,000 plus for mileage. Economy comes in many forms in this case fuel, oil and tires are my biggest expenses and ones that I can somewhat control. We had a cold spell not to long ago of real temps -25 and colder. The HHR still has the original battery and with the Signature Series 5w/30 it cranked right up with out a problem. Next step is to submit an oil sample same time as the factory algorithm says to change oil.
Reviewed by steve:
The wear scar test results verify my faith in your products. combined with the best chemical package to keep my three Diesels & 2 Gasoline motors clean. I like the 25,000 mile products, saves time. thanks for the extra engineering it took for development of these products.
Reviewed by Rayford:
Actually get better fuel mileage , performance and reliability from using Amsoil . Why not use the best in these expensive vehicular .
Reviewed by Upon2wheelsBill:
Your products are easier to compare because the specific facts are up front and easy to understand and are a great value.
Reviewed by Daltonjc:
I use Amsoil in all my vehicles and equipment. I would recommend it to anyone.
Reviewed by RabbitJackson:
The truck runs great and uses no oil at 130,000 miles
Reviewed by Macs:
This oil does what they claim it can do. I normally try to change my oil at around 12000 miles, but sometimes if I'm too busy it goes much longer. At the last oil change, I changed it at 25000 miles. No problems whatsoever. The dipstick oil level was still normal after a year of use. The Signature series oils are worth the extra money. I also use the diesel oil in my 06 Duramax truck. It's about to hit 400,000 miles and not a single problem.
Reviewed by Tyrone:
Now this may sound negative but it's a positive. I bought the 10W 30 for my 1998 Jeep TJ 2.5 with 250,000 miles on it. Amzoil really cleaned and lubricated my engine really well. I dont recommend going to a synthetic motor oil if you have high milage and you did not you synthetic oil prior to because this oil cleaned my engine up but I developed a leak. But in retrospect I'm am going to use only Amzoil in it when I rebuild the engine. Went back to Dyno oil for the time being.
Reviewed by dave:
have used Amsoil for the last 15 yrs. never any complaint with it the only way I get my lawn tractor with the snowblower started in the winter starts every time
Reviewed by Bobby:
Using this oil in 1950 Chevy truck with 2004 LR4 4.8L engine. Starts and protects from below freezing to 90+ in summer with constant oil pressure. Engine looks new inside.
Reviewed by Tom:
I have changed both vehicles over to Amsoil in the engines and the differentials,transfer case and transmission on My pickup and will soon put in Amsoil coolant.
Reviewed by Lar:
As far as I am concerned Amsoil is simply the best for all of their products
Reviewed by Tom:
I have used Amsoil 0w 30 in my 1998 Corvette and now I have 213000 miles on it and there are no unusual engine noises. I change my oil once a year. I have three boats 2 Corvettes,1SUV and a motorcycle all use Amsoil products. I virtually have had no powertrain problems. I use nothing but Amsoil and will continue to do so. I appreciate Amsoil technical papers as they show the science behind these outstanding fluids and are useful to convince others of the merits of Amsoil.
Reviewed by Zed:
Excellent product and protection. After doing much research will only buy this product to protect my classic sports car, and daily driver.
Reviewed by Tom:
Long life. Engine oil stays clean.
Reviewed by The Doc:
I have been using Amsoil in my vehicles since 1986. After having to change a timing chain in an earlier vehicle...it was clear ( internally ) how good Amsoil actually is. The chaincase was as clean as if it was just made. That vehicle continued on to + 260,000km with no oil leaks or other loss.
Amsoil....I am a fan for life!
Reviewed by flight:
I love all AMSOIL products
Reviewed by Rusty:
I use Amsoil in all my vehicles, and I have many. From my Shelby GT 500 to my ATV and lawn mower. Best oil you can buy!
Reviewed by Reno P:
Been using Amsoil Signature Series 5w20 for over 18 years and have been extremely happy with it. I go 15000 miles between changes and never use more than a half quart between changes. It's the BEST.
Reviewed by don't use one:
I use this in both of my vehicles; one specs 5W-20, the other 0W-20. It gets down to -15 degrees where I live in upstate NY and I depend on Amsoil to provide effective lubrication at temperatures where other oils struggle to perform. I generally put over 250,000 miles on each vehicle, and have never had one consume any Amsoil. Totally satisfied.
Reviewed by axecut:
I have to use the best oil. The cost of not using Amsoil will put me out of business
Reviewed by jb:
I've used this oil in my vehicles for at least 10 years and they have performed as promised.....also haven't had any leaks from the engine ....wouldn't change!
Reviewed by Trump2020:
This is by far, the best product on the market.
Reviewed by rblilly:
I do 10k mile oil changes per Toyota, but this oil comes out still clean, not even black. I have no doubt I could use it up to 25k miles.
Reviewed by Chris:
Every oil change gets Amsoil
Reviewed by Jake:
My 16.5 year old truck still started in the cold Iowa winter when plenty of other vehicles even newer ones wouldn't. Have to give credit to good synthetic oil.
Reviewed by Jaymoe67:
Extended drain intervals, combined with my bypass filter, I'd drive this thing to the moon if I could figure out how to get it off the ground!!
Reviewed by Healey:
Good cold weather starts
Reviewed by Whzone:
made a grate difference engine is quiet with a 10% better on gas can't wait for my next oil change
Reviewed by Thomas:
I've used this product on my 2014 Jeep Wrangler, I love this oil been using it awhile with no issues what ever
Reviewed by Travis:
07 FJ cruiser with 150k miles, as soon as I dropped this stuff in, lifter rattle was gone
Reviewed by Rosopower:
Hard To start very cold day
Reviewed by Cliff:
I use Amsoil oil, and fluids in all of my seven vehicles, from bumper to bumper, witch has cut way down on repair, down time and oil consumption..
Reviewed by navret02:
This oil really makes me feel safe knowing the protection it gives!
Reviewed by L. Barr:
Best form of lubrication for any automobile in my opinion.
Reviewed by L. Barr:
Only product for my cars.
Reviewed by Chris:
I use this in my Ram Rebel 1500 and it keeps the truck running smooth.
Reviewed by Dan:
I live a very cold climate. Temps sometimes get down to -30F with wind chils to -50 or more. My vehicles sit out side all year.
I've never had a problem starting them, no mater the temp.
Reviewed by Pink MG:
I use AMSOIL signature series in my new Ford F-150 because the protection is great, the change intervals can be extended if necessary without lubrication properties breaking down. It conveniently shows up at my door via free shipping as a preferred customer.
Reviewed by drm:
This is my first round of 0W-20 Signature Series for a 2015 Suburban as well as a 2016 Toyota. Paired with AMSOIL EA Filters, I trust the recommendations of the vendor. I've never had an issue whatsoever. Oil consumption using Signature Series 5W-30 on previous vehicles with over of 180K and 207K miles was ZERO. I loved the cold weather start and 1x/year oil changes (avg 17K miles/year).
Reviewed by PDFAMILYMAN:
5W20 is for my 2010 Ford Ranger. I run it hard, and the oil does it's job flawlessly. I use AMSOIL on all 5 of my vehicles. I won't buy anything else but AMSOIL.
Reviewed by Johnny's machines:
I use Signature Series 5W-30 in my '98 Subaru (138,000 miles), and it couldn't be happier.
Reviewed by Robert:
Amsoil got my business in 1983 when we were running two stroke outboard engines at very high RPM's in a racing format. After one season putting the engine through these conditions we would rebuild the engine. After the year was up the cylinders still had the hone polishing marks visible to the eye on the cylinders. Every gas or diesel engine I have owned since that day runs on Amsoil and only Amsoil. Why would I try anything else. The extended run time only makes it a better product as far as price. You can get this quality at or near the same price as just oil.
Reviewed by Jeff:
I have been using this amsoil in my Jeep JK 2017 since new, and it seems to be preforming well I also have it in front and rear differential.
Reviewed by C' DAWG:
Have been using AMSOIL products 4 more than 20yrs. No bone 2 pick. No vehicle I've owned has used oil, excellent performance. Engines, transmissions, manual & automatics, & live drive axles! No problems ever! I will only use AMSIOL! THANX ABUNCH AMSIOL!
Reviewed by Dave:
I have been using high mileage synthetic oil for the last 5 years. When i got my emission chech the technician was confused, he said , ' the engine is running so clean, its like purifying the air' !
Reviewed by KNC:
I have used this product for 16 years with excellent results. (All around good oil analysis, much lower cost, time saved.) I recommend this oil whenever possible.
Reviewed by Willy:
Great as usual.
Reviewed by Yogi:
I have used this in a few autos as well as a 4 cycle toro, superb engine protection, second to none cold weather starting as well as lower operating temps in the hottest days of summer. Very highly recommended! !
Reviewed by Mr. B:
This Amsoil Signature Series engine oil is the best I've used.
I call it my liquid Gold. I would highly recommend it.
Reviewed by Old guy:
My Ranger has 210,300 miles. All original engine except fuel pump. Runs great. Amsoil in engine and tranny since purchase.
Reviewed by Dylan T:
I like to keep my car in tip top shape, so I use amsoil.
Reviewed by bogator 2:
A friend of mine has been using this oil for many years and finally talked me into trying it, I have always used synthetic oil but decided to give this one a try, love it..
Reviewed by Vette:
Used for years #1
Reviewed by John:
Amsoil Signature oil is the very best oil on the market and I use it in all of my vehicles.
Reviewed by Al:
This is another product I've been using since it's introduction paired with the EA filters. They make a great combination for protection
Reviewed by Joe:
I have been running this oil in my Silverado and my Chevy SS and this is by far the best oil you can use. Now I still change my oil based upon the intervals the car tells me but the protection you get can't be beat. My oil analysis have come back excellent!
Reviewed by Gregthecarman:
Use this in my 2016 Chevy SS, and in my wife's Ecoboost Flex. It minimizes oil use and improves mileage. Was using Mobil 1, switched to Amsoil (after free dealer oil changes ran out) and oil stays clean longer and mileage improved about .5 mpg in both cars. This is year over year, not tank to tank... Both cars rarely see the highway nowadays (both wife and I switched to jobs close to home so side streets to and from work it is)...mpg's going from 14 to 14.5 doesn't sound like much, but it is something!
Reviewed by Fisherman:
I bought a n oil change for a friendgreat product
Reviewed by 2018 Accord:
Best oil I have used so far. 9k miles on it and oil is still good.
Reviewed by ANGLICO:
I used the Signature Series oil on my 1992 Land Curiser with a 3FE inline 6 cylinder motor with 230,000 miles; I replaced the oil filter as well.
The new Amsoil oil change noticeably fixed several issues I was having with this old motor. The oil pressure stabilized, compression, temperature, noise, and gas mileage all improved as well. No more leaking head gasket seals, burning oil, and more throttle response.
Reviewed by MR.HAPPY:
Feel better engine performance,also the mix of higher octane of gas helps also,love that it limits me to one oil change per year depending on more driving or less.
Reviewed by Berky:
Amsoil is the only oil company that I've ever been able to provide 3rd party testing documentation against other synthetic oils back when no other synthetic manufacturer would provide that sort of information. I switched from Royal Purple to Amsoil when my father recommended them. I asked them to provide documentation that they were the superior product and I would switch. They did and I've been a loyal customer for over a decade now.
I drive all of my vehicles I've owned hard. I feel they are made to be driven, so I drive them hard and push them simply for the joy of driving. If I am going to purchase a sports car, I plan on driving it like one. I use Amsoil to make certain the internal parts of that engine have the best protection I can give them all year around. I have never had an internal part failure on any vehicle I have ever had due to lubrication failure. I trust no other oil to be in any vehicle I own, and I push my friends and family to do the same.
Reviewed by Miles:
Bought to use in a 2018 Honda Accord 2.0 turbo as the stock oil was burning up and leaving black soot all over the back of my car. The amsoil doesn't do that and now I feel confident about my car not blowing up from lack of lubrication and costing me a ton on money to fix. Just wish they sold it in a 5 quart jug cause having to buy a gallon and then a separate jug is a pain and the individual quarts aren't cheap.
Reviewed by Mike:
This Oil is Great. Always Recommend this to others.
Reviewed by Bkrguy:
Finally tried Amsoil. I put it in my 2013 Cadillac and noticed an instant difference. Smoother idle. Smoother acceleration. Increase in fuel mileage. I will be using Amsoil from now on in all vehicles.
Reviewed by Mike:
I changed to Amsoil in 2014.I had a new Chevy truck and by changing to Amsoil 0-20 increased MPG by 1.5 per gallon. It worked great for 75,000 miles. Traded trucks for a 2017 Chevy and changed with Amsoil the first oil change. Just great oil. I also use Amsoil 20-50 in my Harley Davidson which runs cooler than any other oil that I have tried. I run the 20-50 Amsoil dirt bike oil in my 2015 YZ250FX works great. I recommend Amsoil to all my friends. Amsoil has never let me down.
Reviewed by Mike:
I use Amsoil in all my vehicles, 2015 Ford Explorer, 2005 F250 super duty, 2016 GL1800 Goldwing, & 2008 Ford Taurus, It's a super high grrade of oil and I had a 1996 Chevrolet truck 5.7L that i had over 250,000 miles and had pulled the valve covers and it looked as clean as if I had just rebuilt the engine !
Reviewed by Jackal:
Been using and oil puducts for years it's by far the best lubricant in the industry!
Reviewed by Dan:
You cannot find a better oil in America than Amsoil. Read the test data and all the reviews. I was always taught to do research on products to find the best. Thats what I did. AMSOIL is the best!
Reviewed by GarryW:
I have been using AMSOIL Oil for a number of years. I have 340,600 miles on a 2003 SVT Focus and have been very pleased with how AMSOIL OIL has protected the engine.
Reviewed by Robert:
I have been using amsoil 5w-30 on my 2004 range rover hse and 2008 range rover hse for almost 15 yrs now and these oil brings back old cars back to life instantly from fuel efficiency to engine fluidity. Engine feels like new. I change oil from 6-8 months or 7500 miles.
Reviewed by Dave in CO:
Love the performance of my motorcycles w this oil.
Reviewed by John:
Used signature 10-30 synthetic in my 2002 sequoia and drove almost 15,000 miles before changing the oil and filter. I sent a sample of the waste oil to a lab for analysis. The oil was good, still usable, with no traces of problems.
Reviewed by Hockeyguru21:
I put OW-20 in for the 10,000 mile coverage. I am 2,000 away from a change. I checked the dipstick today and the oil was black. This suprised me a bit. Is this normal?
Re: Does oil get dirty near changing time?
Yes, it is normal. Oil color does not relate to remainder oil life or lubricity properties. Just make sure that you are using a good oil filter and replace it according to filter manufacturer's recommendations and top up with oil.Replied by Tech Admin
Reviewed by Gerry:
I've been using Amsoil for almost 20 years, my 1999 GMC Yukon Denali, 219,000 miles, and 2008 Mitsubishi Outlander SE, 221,000 miles using 0w30 Signature Series and both still going strong, and now a 2016 GMC Canyon Diesel truck using the 5w30 European Formula, Highly Reliable Product in my book.
Reviewed by Rustdoc:
I use Amsoil in all of my vehicles. I have found it saves fuel and makes my engines run much smoother and cooler. I have proved the use to many friends with my Harley's showing them how ell they perform also.
Reviewed by Tony D:
Motor run smoother get better gas mileage and change the oil less Oil still looks great when it comes out
Reviewed by Dave:
Have been using Amsoil everywhere possible, don't have to ask twice.
Reviewed by Rick:
The third party tests only depict the facts. But I have many years and many vehicles that only used Amsoil. I appreciate that Amsoil offers OEM and other options. That's awesome. But I've always gone with the Signature Series oils. I keep things as simple as I can. I don't want anything but the best, and I don't want to have to second guess engine protection. A full year (repeated years, one is a 13 yo Focus I bought new), that has never been more than a half a quart below full at its annual oil change. ??? Why scrimp on protection when I'm saving money and producing much less recycle oil, AND the car runs awesome after all these years?
Reviewed by Mobilemotormedic:
I switched from conventional oils and filters back in 2012 and its been the best decision I've made concerning lubricants.
Reviewed by Mr. Bob:
I have used this since the first oil change in my car that I bought new in 2016. Newer vehicles call for a 0W-20 oil. With that thinner weight oil I am concerned about wear protection. Looking at independent test lab results of Amsoil 0W-20 oil I see that it does better than other oils and passes the tests with ease. My car also has variable valve timing which can be vulnerable to sludge buildup. A clean synthetic oil is a must and the Amsoil additive package fights sludge better than others. We get easier cold weather starts and slightly better mpg too. Spendy but good.
Reviewed by Stan:
I believe that Amsoil is the best motor oil that you can buy.
Reviewed by BH:
Keeps my Subaru DIT engine running smooth. I wouldn't put anything else into a turbo charged engine.
Reviewed by Coyote:
Great product
Reviewed by shotz:
Oil seems to work very well . This is the second oil change with it - so we'll see how it goes from here
Reviewed by Eric:
I have used Amsoil forever. I dont trust any other oil in my vehicles.
Reviewed by Charlie:
I really have enjoyed the switch to synthetic, I was super pumped to open up my kit in the mail.
Reviewed by Rond:
Bar none, Amziol products are the absolute best you can buy! For everything you own, farm, lawn and garden , cars, trucks
Reviewed by Subaru man:
Just turned 120,000 miles and the engine is very quiet and runs like new.
Reviewed by Wrangss:
Excellent engine protection with the long term performance provided by Amsoil. Consistently better mileage than any other lubrication product. Would recommend to anyone wanting the absolute best in engine protection and lubrication.
Reviewed by Jeff:
Use this in my 2011 Camry with 250k miles since new changing it every 25k miles
Reviewed by DM:
My go to oil for 05 and 10 Impala. Used Amsoil since buying the cars with approx 60,000 km on each. 40,000 km oil changes within 12 months with a filter change at around the 20K km mark. I had 345K on the 10 Impala when the transmission gave out - motor was strong. The 05 is still running well with over 395K kms. Has to have something to do with good quality oil.
Reviewed by J. Rasmussen:
I only use Amsoil. Wouldn't waste my time, money or vehicles on anything else.
Reviewed by Josh:
I have used this for a few years now and has provided the best protection out of all the oils out there for me.
Reviewed by Green Dragon:
My '14 Outback V6 requires 5W-30 I have used Amsoil every 5,000 mile or 6 months to meet warranty requirements since my first oil change at 1,000 miles in 2014. At 50,000 miles the V6 still hums like a sewing machine
Reviewed by Green Dragon:
When I purchased my 2014 Tundra, I asked the dealership service writer I have known for 25 years for a recommendation regarding motor oil. He suggested Amsoil. I have been using Amsoil in my Tundra since October '13; I also use Amsoil in my Highlander, my wife's Camry, my Honda lawn mower, and in my John Deere Diesel garden tractor. So far, everything still runs like new.
Reviewed by Brad:
I run Amsoil in my truck and snowmobile.
Reviewed by Eric:
My car runs way better and bring out lots of power
Reviewed by Jim:
Signature Series oil is unbelievable. I have had multiple vehicles with two hundred to three hundred twenty-five thousand miles on them and Amsoil keep clean like new. I also have 22 and 38 year old tractors that use no oil.
Reviewed by JP:
Never in doubt...
Reviewed by Leaper:
Hands down the best oil I've ever used in all my trucks and suvs
I saw improvements in fuel mileage
Lower rpm at idle
Cooler temperatures
I will never use anything else but Amsoil
Reviewed by Yan5366:
My bmw 328 run super great ... incredible in cold temperature....thanks
Reviewed by Grumpy Too:
I only want the premium best for my new Camaro SS-That is Amsoil!
Reviewed by G-Train:
I use Amsoil Signature Series in all of my cars, from my truck, daily drivers and four various Porsche models. Nothing better and I will never switch!
Reviewed by ZacG:
It's expensive but for protection it's worth it. It seems to be the best wear protection of any oils I've tried in my various vehicles
Reviewed by Josh:
Use it in all my cars, only oil that my cars don't drink like water.
Reviewed by Camaro6:
I have a 2016 Camaro ss that started to burn a little oil with the valvoline full synthetic I was using. I started using Amsoil and two oil changes later the car hasn't burned a drop of oil and the oil seems to hold up a lot better. I will only be using Amsoil in my cars from now on.
Reviewed by Rat:
Been using this oil for years.
Reviewed by Dale:
Switched over to Amsoil in my F-150 with the 5.4L Triton. Switch over with just over 100k on the truck. I did use the engine flush per recommendation. I did notice that it is quieter on start up at sub-zero(-20f) temperatures. I have oil pressure at turn key! A must have in the Northern area.
Reviewed by Higg:
I use this 5w30 in a 2006 explorer with over 200,000 miles and have no issues.
Reviewed by Shiz:
Best oil in the market use it on all our cars!
Reviewed by Harry:
Best oil on the market. Buying anything else is foolinness.
Reviewed by B:
The type of oils and fluids that go into my vehicles etc hands own #1 in the business you want the best from your vehicle then you have to use the best.
Reviewed by MTpDog:
Excellent oil, I use Amsoil in all my mechanical equipment and they last a long time!
Reviewed by Brian:
I use Amsoil in my pick up, I like the piece of mind of knowing I have the best possible protection for my engine.
Reviewed by Tim:
I am a relatively new user, but the research I have done has all been positive and enthusiastic, both from friends and online.
Reviewed by Barry:
Decided to switch from Mobil1 to Amsoil for my Toyota cars. Went with the 25,000 mile oil so I don't have to change oil so often. Once a year oil change is perfect for me. Very pleased and it's such a better oil.
Reviewed by 1973:
Used and followed Amsoil for most of the last 45 years. It's always got the job done and the 5W-30 has worked great whether it's winter or summer. Change it once a year and forget about it. Even in my older high mileage cars, they make it from oil change to oil change without having to add. I love it. Can't understand why anyone would use anything else.
Reviewed by Eric:
I use the Amsoil 5w 30 and the Ea Amsoil Oil Filters in both my 2018 Chevrolet Silverado and Tahoe. The quality and durability of the Amsoil is second to none.
Reviewed by Don:
noticed when i put it in the engine ran quieter
Reviewed by Bstill48:
Great product. I drive 120 miles a day to go to work. I increased my gas mileage and can tell the difference in the engine in how quite it runs.
Reviewed by Chuckle Berry:
I use Amsoil for all my vehicles, have done so for over 15 years, won't trust their protection to any other oil.
Reviewed by D:
Great products keeps engines clean and lubricated
Reviewed by Jerry420:
I will only use amsoil products in my vehicles and for the price u can't beat it
Reviewed by Mel:
I use this oil in my ZL1 Camaro and it makes the car run cooler and the means that less friction, i have no dislikes
Reviewed by Dave:
Nothing better out there for my 6.4 hemi.
And my sxs vehicle's
Reviewed by Art:
I use this on my 2008 Volvo C30R with 166000 miles. Engine runs smoothly with amsoil.
Reviewed by K:
Oil is the best
Reviewed by BillyO:
Have used Amsoil on my 2018 WB Hellcat since 1st. oil change with Extremely satisfying results. So happy use it in my Jeep Wrangler as well. Nothing but the best for my vehicles.
Reviewed by Hey you:
This was recommended for my vehicle and I have used other amsoil products in other vehicles and have blessed using it. Tks
Reviewed by Jube:
I have been running an amsoil product in my 08 Toyota Tundra since new. When i say new i mean when the engine had enough km's that it was past the break in point I switched. I ran Amsoil XL for several years at the recommendation of the place i get my oil changes at. Changed it out every 6 months. I am pretty sure Signature Series was never recommend as they would only get my business once per year. Not knowing exactly what Amsoil had to offer I did some further research and discovered this Signature Series oil. I now change my own oil as I am able to order directly from Amsoil. I have been running Signature Series for about 5 yrs now with basically a once a yr oil change. I mainly drive secondary rds but come fall hunting seasons i am all over the backwoods. Here where i live it can get down to -30 at times during the winter. The flow rate is excellent in extreme cold as well as I always watch oil pressure gauge and no matter how cold it seems the needle always jumps up quickly on cold start up. My truck now has 271,000 KM's on it. Even with once a yr oil changes the oil doesn't look alot darker than it did when i changed it the previous year. Great product I can't imagine running a different oil in. I now have my son's truck running on Signature Series as well. I plan on putting 1 million Km's on my truck!
Reviewed by Frank:
2017 Tacoma TRD Off Road struggles to get 18mpg. Used Signature Series Synthetic and now getting 20-21mpg.
Reviewed by Frenchbernie:
Discover Amsoil in 2012 & have slowly been converting all my vehicles to Amsoil. Even converting friend but they are harder to convince because most rent their cars & basically don't care if they last or not. Consumer society. That being said all my immediate family use Amsoil.
Reviewed by Upschuck:
Save time, money and engine wear. Have used Amsoil in all my vehicles and equipment for over 25 years and and have not experienced an engine failure.
Reviewed by Clint H:
Been using Amsoil in my Dodge Dakota since I purchased it 13 years ago. Today it has 250,000 miles on it and still runs great.
Reviewed by Hard Rock Rubicon:
I have done only a couple of oil changes on my low mileage Jeep but I wanted the best oil and have no regrets with buying AmsOil signature series oil.
Reviewed by Oil buyers:
I'm not sure how you review oil.
When I opened container, the oil, was oily. So I put it in my engine.
My engine has not blown up, so I assume it's the right oil.
I'll keep buying their oil, until it no longer feels oily to the touch straight out of the bottle.
Reviewed by Glen:
I have a 96 Chev C-1500 with over 360k that has had AMSOIL in it for over 350k without any failures. It runs good and sounds like it has a new engine in it, but its the original without any major work on it. I also use AMSOIL in the transmission and the rear gears. I have had a valve cover off and you wouldn't believe how clean it was on the inside, no sludge.
Reviewed by Bill:
Feels and runs smoothly !
Reviewed by Ken L:
Excellent protection
Reviewed by Bubba:
I highly recommend this product. I only use amsoil products in everything from my compressor to my vehicles. They have done there homework to produce great products.
Reviewed by Vic:
Reviewed by JerseyGray:
I use Amsoil in everything from my truck to my motorcycle, lawn mowers, generators and anything that takes oil. I also use the oil filters, gear oil, and everything that Amsoil makes.
Reviewed by Rdskelton:
Oil pressure is improved with this product
Reviewed by Nick:
While I can't say the car runs better with this vs another top synthetic, I have hundreds of thousands of miles on my vehicles with this oil only changing once a year. Great stuff!
Reviewed by Nick:
Trusted product! This particular oil was made for my engine what can you ask more? They took the time and knowledge to make the oil possible for my car... its really a no brainer! Nice to have a compagnie that's back you up!
Reviewed by Randy:
I have been using AMS Oil for 18 years and wouldn't use anything else. It is by far the best and all of my vehicles with several hundred thousand miles on them combined is the proof.
Reviewed by Curt:
I doubled my miles between oil changes which saved me money, I use it in my small truck also.
Reviewed by Jeep Lover Josh:
So I run Amsoil signature series in all my vehicles. I run 5w-20 in the 2015 Jeep Rubicon Hard Rock and when I changed the oil at 7000 miles of use the oil lab came back and said to change at 9000 next time and see how it's doing. The wife's 2011 Subaru Impresa 5w-30 oil was changed at around 7000 miles as well and the results were the same! I think once the oil is tested at 9000 they will most likely advise I go even longer. They measured for contaminants as well as assessing the TBN which both came back outstanding, and both engines have zero issues. Black Labs is where I send my oil. The higher price for Amsoil is worth it in my opinion especially when I can go so long in between changes. It pays for itself.
Reviewed by oneshot:
I have numerous vehicles with 60-400,000 miles on them that have been running Amsoil most of their lives. All still have original engines. What more can I say?
Reviewed by Jordan:
So far so good. Only have 26k on the car so far.
Reviewed by Gator Shelby:
The best price and solid transactions
Reviewed by Oil Fan:
Used to go to quick non-synthetic oil change place until they stripped my oil pan threads. Decided to change my own and use Amsoil. Was changing every 5000 miles before now going 10,000 miles. Materials cost is more, about what materials and labor was before but I'm going twice as far.
Reviewed by Great OIL!:
Have been using this oil since around 2006. My 2006 Ford E350 work van has145,000 at 15,000 mile change intervals before I sold it . My 2006 E350 15 passenger van currently has 185,000 at 20,000 mile change intervals. Great oil have had no issues with it.
Reviewed by Wilson:
Engine has been running smoothly after changing into this signature oils.
Reviewed by LDW:
Best you can buy for your vehicle.
Reviewed by Brogan:
I was nervous switching from high mileage to a full synthetic, but 84 Chevy pickup now runs better than ever and actually has less leaks now. I also run this same oil in my 84 Honda Nighthawk motorcycle.
Reviewed by Ron:
All I use in my vehicle's is Amsoil ...I wanted to put good oil in my vehicle's so tryed Amsoil and been using it for 20 years now. It's the best hands down period...
Reviewed by The Mechanic:
I have used this product for years, I wouldn't trust any other product in my vechicles.
Reviewed by G'd up from the feet up:
Solid oil that's maintained it color and viscosity for 3k+ miles of spirited day to day driving
Reviewed by Sam:
This oil controls carbon buildup on the intake valves of gas direct injection engine. lowest evaporation rate.
Reviewed by Mark:
I have been using this product on my 2010 Mazda 3GT since new. I am nearing 186,000 miles on the car and have the oil checked at every change. The analyzers are always telling me the oil has more life left and everything looks great. I will be using this product in every vehicle I own and recommend it to everyone who asks. A first rate product!
Reviewed by SharpSmith:
As a mobile sharpener, I put a lot of miles on my vehicle. By using AMSOIL, I have peace of mind that my van will run smoothly for a very long time. I highly recommend this product!
Reviewed by JK:
I use product in my 2016 2.4 litre canyon . It's a great product but my engines seems consume some of it . A litre on 5000 km disappears through exhaust .
Reviewed by Felix:
Long lasting great protection
Reviewed by Joelon:
Going on 7k mile oil change...oil still looks new... Car performing well. Amsoil is the best of the best.. you get what you pay for...no more mobile one or Royal purple for me ..never again.
Reviewed by Rob:
I wouldn't use ANYTHING ELSE!!!!!
Reviewed by Pedro:
I be using amsolil in all my car back front the 1990 I never have any engine problem. All my cars run good and I put a lot of miles and the engine always run good ! I have 2014 Acura MDX I be using amsoil when the car make 7,500 and the car still running like new !
Reviewed by Pedro:
I be using amsolil in all my car back front the 1990 I never have any engine problem. All my cars run good and I put a lot of miles and the engine always run good ! I have now a 2018 Accord that only have 9 months and have already 31,000k and I be using amsoil when the car make 7,500 and the car still running like new !
Reviewed by JetAMT:
This is hands down the very best oil you can buy. Been a faithful Amsoil user sense 1982. The very best protection there is
Reviewed by JT:
When servicing my vehicles with Amsoil Sinature series oil, the dealer always comments on how there are no leaks. It also increases my trade in value when I upgrade. Never a complaint.
Reviewed by Mal:
Using this Motor Oil puts me at ease and you can depend on it to so it's job. I have used Ams Oil for years now and it keeps your engine running as quiet with nearly 200,000 miles on it as the 1st day you got your car. It definitly keeps your internals sludge free. This I have experienced first hand. Oil pan and valve cover removal.
Reviewed by Tarzan:
I use Amsoil products for all of my lubricants in all my vehicles and equipment since 2015. I am very pleased with the performance and protection and am convinced these products are second to none. I bought an F-150 in 2015 that sounded like the transmission was ruined, put in an other brand of transmission fluid and nothing changed. I then put in Amsoil transmission fluid and it immediately fixed the problem. I haven't looked back since. I know the products might be a little more expensive then some, but they are the best. Thank-you for putting out a great product that is a valuable investment for hard-earned money!
Reviewed by Dust:
Great Product, run the small engine oil in my Kohler whole house Generator.. runs cooler , quieter and I know I'm using the best oil between change intervals... also I have a 2005 F150 with the 5.4 Triton Engine.. everyone knows about the problems with these motors.. switched over to Signiture 5w-30 a couple years ago.. runs a lot quieter , cooler and just seems to purr .. yes I know the motor specs 5w-20 but it does honestly run better and have had 0 issues with the motor.. ... Bought truck new in 2005..
Reviewed by Greg:
Use it in everthing
Reviewed by none:
I use Amsoil because it is the best oil. I recommend it to all my friends.
Reviewed by Phil:
I will only use Amsoil lubricants in my vehicles and power equipment. Amsoil products are the best protection I can get and give my investments.
Reviewed by Mike:
Had royal purple in my wife's Dodge Durango 5.7 V8. If it sat for a few days and I started it I could hear a valve knock that lasted a few seconds and sounded bad. I've had this amsoil in with amsoil oil filter and I can leave it sitting for a week and start up sounds completely normal. I can tell I'm getting proper lubrication and I trust amsoil because of it. Also put it in my Cummins diesel and it's smooth as glass as well. I think I'm amsoil for life.
Reviewed by Pontiac 6:
I have been using Amsoil oil and filters for about 20 years and in my opinion they are the best on the market. I ran a 2001 Chevy Blazer 25K miles between changes with absolutely no problems and it was still running perfectly with 109K miles on it when I sold it.
Reviewed by Josh:
I use this oil in my 98 wrangler works great
Reviewed by VQ35DE:
She still beats a GT Mustang after 14 years, running Amsoil since the start
Reviewed by AmsoilGuy78:
I run this in all of my vehicles. It is worth every penny for sure! You won't regret buying this.
Reviewed by Timothy A SFC RET:
Phenomenal product that is worth the price. Yes it is expensive initially, but it has stood up to some hard usage with issues. 20K oil? Bet on it!
Reviewed by Adil Ejaz:
This is the best oil I have ever used
Reviewed by Stephen:
Using Amsoil products for over 20 years and nothing else...
Reviewed by Ain't got time:
I use Amsoil, dual bypass oil filtration, and test lab analysis to support extended oil changes. Lab analysis has shown me I can run almost 40K miles without changing oil. I sometimes drive 1000 miles a week or more for my job; and monthly oil changes simply don't cut it. Amsoil does. I spare not the miles and trust Amsoil to go the distance; I have independent lab analysis to demonstrate it.
Reviewed by Mr Ed:
It's the ONLY oil I will allow to be used for my Shelby GT 500! Provides the greatest protection for the high performance engine!
Reviewed by Asphalt F150:
I use this oil in my 2013 F150 with the eco-boost 3.5L engine. Truck burns or uses zero oil between oil changes(once a year). I only drive about 7,000 miles a year. I use Amsoil because I know Amsoil makes the best products available.
Reviewed by Bubba:
Been using AMSOIL since the 70's in many cars and trucks. Sold one truck to a mechanic after 204K miles. He said it was the cleanest engine he' ever seen.
Reviewed by rrigsby24:
Customer for 7 months. I can't say anything someone else hasn't said already. This was for my Dad's girlfriend car. We have my truck, his truck, her SUV, my mower all on amsoil. My truck is all done. Engine, tranny, rear end, transfer case. Waiting to put in coolant. It sells itself. They say everything drives.i use signature series and will never use anything else in any motor I ever own.dealerahips can say whatever they want, just stinks you have to change within a certain mileage to keep warranty cause this oil goes forever compared to rest. Use it and see!!!!
Reviewed by Sierra owner 12:
I chose to go 0-40 for both cold flow and film strength at the running temps. Motor is getting cleaner every oil change and is running great. I tow with confidence and will continue to run the first in synthetics
Reviewed by TM:
After switching over to AMSOIL Signiture Series 5W30 in my '07 Prius, I couldn't be happier. The gas motor is running very smoothly and more efficiently since I have owned it! Not too shabby considering it has 124K+ miles on it! This oil is the real deal. If you are serious about keeping your car in the best condition for as long as possible, there isn't a better oil out there that can deliver on that than AMSOIL.
Reviewed by Mike T:
Back in 2006 I have swivhed from other brands to Amsoil. Based on some independent test results, and most importantly a friend. Who have tested his 12000 mile oil being Amsoil, on 45000 mile vehicle, that used amsoil since new. Test results sugested fillowing: 1) oil is 6000-7000 mile old 2) engine is 15000-25000 miles old 3) if lubrication continues as before, engine should ladt over 300000 miles.
That was enough info for me to switch, also Mobil 1 that I was using at the time, came with less promising test results.
Since the switch I have been using Amsoil in every car, and truck I owned. Never had a failure due to lubrication. And most importantly have saved a bunch of money, on changing oil once per year. Signature series, along with EA filter can last up to 25000 miles. I would never go past 15000 miles.
Reviewed by Duff:
I have a 05 ram 2500 HD 250000 miles on it still runs like a dream
Reviewed by John:
I used this blend for years until I changed to the European blend and it worked very well ....
Reviewed by Mario:
Reviewed by Nick/repair tech/enthusiast:
The highest quality oil for everything with and engine, hands down.
Reviewed by Big Al:
I've used Amsoil over the last 30 plus years and never had a problem with any of the product. I use it in offroad vehicles, 4x4 Jeeps, turbo charged engines, NA engines and anything else that benefits from a high quality synthetic lubricant.
Reviewed by Hubert:
I have been using Amsoil 100% synthetic engine oils in all my cars, my wife cars since 1984.
At first it was 10w-40 AMO, then in 2002 I switched to 5w-30 ASL. I refuse to use the 5w-20 and 0w-20
oil, I feel my engine is better protected with the 5w-30. I also use the oil filters, the grease.
They are simply high quality, great products and the service is great. I order online via the Amsoil website since 2001. I get my order within a couple of days, and there is never any mistakes.
Reviewed by Tads Subaru:
I have used Amsoil signature oil for over a 100,000 miles in my vehicle. I tried other oils but they did not last or perform up to my standards.
Reviewed by Racing girl:
I can go a long time between oil changes with the signature series 5W 20 oil, it is amazing how much better my truck has been running since I have been using it. I haven't found a con with it yet, just all pros!
Reviewed by Jay:
I have used Amsoil for many years, I use it in all my vehicles everything from my daily driver to my classic and antique cars, I even order it for my friends and family who all love how it works and the convenience of use ie. Once a year oil change.
Reviewed by Sacco:
.............. .............
Reviewed by Larry:
AMSOIL Signature Series 5W-30 Motor Oil
keeps my car running smoothly.
Reviewed by Animal:
This product has Pierier antiwear property is
Reviewed by Chuck:
I've been using Amsoil oil for more than 20 years so when I bought a used 2011 Toyota Highlander that requires 0W20 oil I chose Amsoil Signature. I noticed that the my SUV used less oil with Amsoil compared to whatever the dealership put in it. I've had several vehicles that even after 10,000 miles used virtually no oil when using Amsoil.
Reviewed by None:
I have been using Amsoil for years. Commutes for me is 40 to 50 kms oneway and I can run Amsoil and never have to add oil. Had an old car overheat in Calgary one summer due to traffic on the deerfoot trail and there was no problem afterwards with the car or the oil.
Reviewed by Trevor:
I have used this product for years, it gives my vehicles top notch protection!
Reviewed by Harley Cop:
I have used Amsoil products since 2003. Never a problem. I have recommended it to friends without any qualms.
Reviewed by DJM:
Ever since discovering this oil in 2005 I've never used anything else, and it's never let me down. 15k miles between oil changes and it's still gold in color not black like others.
Reviewed by Chris:
I use the product in my 2013 Dodge Ram 5.7L.
I believe I have increased fuel mileage and the truck runs great!
Reviewed by DoubleD:
I have used amsoil in my motorcycle and personal vehicles for years. All of them perform perfectly.
Reviewed by Lando:
Product works amazing! No issues
Reviewed by Ernie:
Love the oil never had issues power foam is the best out there if ya know how to use it correctly.. very happy with the results and products..
Reviewed by Andy:
Amsoil is de bessss!
Reviewed by Smilinjack:
Smilinjack has been using AMSOIL 1030,1040 2Cycle oil, Power Foam, oil and air filters and Performance Improver continually since 1979. Once we tried it, have never ever needed or used anything else. Automotive use, lawnmower, lawn tractor, boat motors and my portable generator all perform well with AmsOil in the crankcase. Excellent products. Knew a good thing when we first found it and will never go to anything else. EOM
Reviewed by Joe:
Great product, love the extended drain capability.
Reviewed by Tom:
I have been using Amsoil in every vehicle I have owned for the past 15 years. I like the extra protection and only changing oil once a year.
Reviewed by Robert:
your car runs great
Reviewed by Brian:
I just had a 600 horse 460 Ford built and put in my truck and this oil is the best insurance for a hydraulic roller cam motor in my honest opinion..
Reviewed by Rob:
This product goes in all my vehicles!
Reviewed by Alex:
Used it in my 2015 Ford Fiesta rally car. Seems to be working.
will buy again in couple months when time comes to change oil and filter!
Reviewed by Mack:
Well, I am not the guy who owns a mega-truck or 5 SUV's. I have the "love of my life" who's stuck with me for 38 years and a major cardiac failure. My goal is to make sure that this investment of my life sticks around for awhile. Everyday she gets in her 2013 Honda CR-V and takes to the roads. Her rig WILL have the BEST I can afford protecting her. This is why when it comes to the products you make, they will be used. When the BEST is used there is no need for excuses!
Reviewed by Craig Sr.:
I have been around cars and trucks since I was 11 years old...rebuilding, normal maintenance, restoring, and mechanical. At almost 70 I can tell you that my pride and joy is a 1998 Chrysler Town & Country LXI mini van. I proudly have 385K Amsoil miles and it still runs like new. I get exceptional mileage, no smoke from exhaust, no rough idling, no engine noise (that most older motors get), and can say after sitting in the drivers seat all those miles...I still love to drive it and see what new gets better! I am constantly surprised at how smooth a quiet the motor runs. When I take it get my tires rotated they always comment on how well it runs...here is the irony. When trying to explain about additives there is a blank look as people just don't understand that synthetic oil is engineered not manufactured. A lot of time, research dollars, and effort has gone into the making of each product. I will always explain the benefits of Amsoil when asked...just get tired of people that are ignorant to the science and technology that has made this product what it is. I have been a 20+ year user and will always continue! Thanks Amsoil for sticking to your desire to be the best!
Reviewed by Dennis:
I use this in all my car's and trucks
Reviewed by Derek:
Best oil on the market!
Reviewed by Jerry:
I've been using Amsoil products for many years. I don't have to worry if I've gone over the 5,000 mile interval, because I know Amsoil will protect my engines. The oil filters are top grade, and great to use with Amsoil. I also use many other AMSOIL products. The gun cleaner and gun oil is excellent for my police service revolver and I use it faithfully, knowing it will protect my pistol, shotgun and assault weapon. The cost may be slightly higher, but the protection is excellent and guaranteed to perform.
Reviewed by Boosted:
It's simply great oil made for great engines.
If you have a boosted engine stick with the best, you won't regret it.
Reviewed by Bones67:
Have used for years on my 2000 Chevy Impala, 1995 Toyota corolla, 2010 and 20 12 Toyota Prius, and will be on my 20 17 Rav4 b
Reviewed by C6:
Oil exceed all expectations.
Reviewed by Danny:
In my truck
Reviewed by Jake:
I use it in my 2014 Chevy Silverado
Reviewed by Mike D:
Since day 1 of the first oil change, and several others, 45K miles later it's still running like a champ. I've been using Amsoil for years. Nothing will change my mind.
Reviewed by Wheelchair Pete:
Been using this in my DD/cars for the past 10+ years and never any oil issues.
Good stuff.
Reviewed by LadyTuner:
I converted my car to Amsoil 11 years ago when I first bought her. She was 4 years old and had 78k miles. Once I changed her to Amsoil, she instantly ran better. Now at 176k miles, she has the cleanest valves any mechanic has seen! I'm proud to be raised on Amsoil
Reviewed by Cycotravlr:
I use Amsoil Signature Series 5W-30 sinthetic oil in my 2006 Solstice and my 2013 F-150. Amsoil is the Best and wouldn't use anything else.
Reviewed by racinjayson:
This is a great product and I use it in all of my vehicles. The biggest difference is that all my motors run quieter than any other product I have tried including royal purper. Could not be happier.
Reviewed by Jim:
I have 0 complaints about any product that I've used yet. My 06 Silverado and 07 Trailblazer both get Amsoil. 15k Mike changes with 0 issue
Reviewed by GREEN FLAMES:
Reviewed by Stan:
Best you can buy.
Reviewed by Kyle:
Great product
Reviewed by Chris W:
AMSOIL is THE ONLY oil and lubrication product I use in everything I own. I would put this up against any other synthetic lubricant any day.
Reviewed by Dennis:
I have been using this oil in my06 Dodge Ram for years. Makes better oil pressure than other brands.
Reviewed by Rusty:
Run, it in all three vehicles that call for 5 w 20wt.
Reviewed by Tim:
I have used Amsiol products in all my vehicles for several years with good results.
Reviewed by Mismo Titan:
Switched to amsoil and my engine is quieter, and runs better. I tow a lot with my truck and know with amsoil that the oil is breaking down under heavy load.
Reviewed by Blu1:
Not many choices for 5w-50. This is the only real quality option. Thanks for making the wt.
Reviewed by Cliff:
I own a pickup and two autos, two utility tractors, four chain saws, three weed eaters and eight small engine machines. I have AMSOIL in each and every one. My Pickup is used to pull a large trailer and for snow plowing for several customers. I also use fuel cleaners, fuel preserve products, oil mix and grease gun tubes. I have experienced oil leaking and oil burning motors stop doing both and a one pull start on the small motors.There is no other oil and other products that compare to AMSOIL.
Reviewed by CJ:
Been using Amsoil 20 years and have had no problems. Put oil in my Durmax and put the big filter on and did need to change oil only once.
Amsoil has been making oil for years, now everyone is trying too.
Reviewed by Cycotravlr:
I use 0-20 Amsoil in my Family crossover. I run it 15,000 mile between changes and the oil still looks clean when I drain it.
Reviewed by Collin:
The Signature Series oil is the best and most money-worth-it oil that's available from Amsoil...period!
Reviewed by headhound:
Minimizes actual engine wear while managing fuel economy. Yearly oil changes is great.
Reviewed by Otsg392:
I put Amsoil 5w - 50 I'm my 2012 Boss 302. Product works great for regular driving or hittting the track.
Reviewed by The bear:
I used this product in my SUV, runs smooth get better mileage and start very well in extremely cold weather. I used their product in all my vehicles and small engines.
Reviewed by Larry for Life:
Amsoil makes a huge difference in the performance and longevity of your vehicle. Nothing else goes into my cars, trucks, lawn mowers, chainsaws, etc.
Reviewed by Mike G in SD:
I've been using AMSOIL motor oil for just over 5 years now and been very satisfied, no complaints...ever!
Reviewed by Al:
I use it in all the engines in my house. My cars, lawn mower, pressure washer and generator. I feel my equipment runs better and more efficient.
Reviewed by soOldithurts:
I use this oil in my track car. I have a magnetic plug and nothing has shown up there. The filter is also clean after each use (I check it). Oil pressures are good on track. I plan to use this oil well into the future.
Reviewed by Andrew:
I run this oil in my 2003 Honda S2000 and I love it. Had my head rebuilt and checked the cylinder walls, cams, etc. with 111k miles on the engine with force induction. There were barely any wear at all! I will always run Amsoil.
Reviewed by Vader3:
I use the 5W30 along with the Amsoil oil filter and I run it 15,000 miles before I change the oil. I also use the Amsoil AFT which can keep the transmission temperature up to 60 degrees cooler. Reduce friction and save your equipment
Reviewed by Paul:
I use only Amsoil in all my vehicles--engine, trans, and differential. Best products on the market.
Reviewed by Drake:
Lasts well. Color is still clean after 5k. Gas milage is slightly higher. No oil leaks in a Ford Taurus with 200k.
Reviewed by JHPAINT:
Great oil for direct injection engines
Reviewed by Johny:
I've been using this since 2003 in my Toyota Solara that has the V6 which is prone to sludge. I now have 470,000 miles on it and still running strong and does not smoke. I change it and the filter about every 10 to 15 thousand miles, sometime longer.
Reviewed by JC:
In work&personal vehicle.Work car approaching 300,000 miles-Starts easy in old weather-improves gas mileage-don't have to change every 3000 miles as you have to with conventional oil-can't think of anything negative
Reviewed by drew:
I use this oil in a variety of cars and trucks i service. Some of these cars are turbos and some are natural aspiration. No matter the heat load in any of these cars or trucks they seem to have extremely low friction when i inspected during engine rebuilds.
Reviewed by Drew:
I buy this oil about once a year for a friends 2004 Lincoln Town Car. He only drives around the city and occasionally to Richmond Virginia. He always gets a 19~20 mpg in the slow city with the ac blasting and on the highway 25~27 mpg. That is a 280 hp 4.6 liter v-8. The engine runs so smooth now its a huge difference from before the use of amsoil.
Reviewed by Brian:
In my motocycle
Reviewed by Nick:
The to go motor oil for all 0W-20, 0W-30, 5W-20, 5W-30, 10W-30 applications except europeans.
Reviewed by Sam:
My engine is really quiet now. That tells me that Amsoil is lubricating the engine in a way that the other oils can't. I changed all the fluids on my 2017 Chevrolet 2500 HD 4x4. Fuel mileage is up and vehicle noise ( engine, transmission, transfer case and differentials ) is down. it truly makes a difference.
I've also switched to Amsoil in wife's 2017 Ford Explorer, my son's 2015 Ram 1500 and my 2015 Tahoe Q7i SF boat.
Reviewed by Poppabear:
I use Amsoil products in my truck and my wife car. I started using Amsoil products in my race car many years ago and had such good luck with them I have been using them in anything I own with a gasoline engine. My truck has over 200,000 miles on it and it runs like new. We use my wife's car for road trips and I always ride with confidence in Amsoil products. I would definitely recommend Amsoil to family and friends..
Reviewed by Scott:
great stuff
Reviewed by Two Hair:
I have been using this product (5w-30 signature series) for sixteen years. A little better gas mileage and I feel the auto is better protected in our high heat that we get during the summers here.
Reviewed by Bill:
We Transport trailers with our pickup and run only Amsoil in it. Love the extended oil changes, especially since we run so many miles. Because of the ability to run more miles on it, it actually is cheaper to run Amsoil. Wouldn't run anything else!
Reviewed by KB:
By far the best motor oil I've used!
Reviewed by Tim:
Use it in honda crv.Great oil. Long life.
Reviewed by Pose:
I only trust Amsoil in all of my vehicles.
Reviewed by Dale:
A couple of years ago I had my 1998 Chevrolet Silverado in the shop for an intake gasket repair. About mid-day I received a call from the repair shop asking me what kind of oil I ran in the engine. They were amazed as they told me they had never seen an engine so clean inside. I told them I had been running Amsoil in the engine for the past 1.5 years. I had heard of Amsoil for years and talked to a diesel mechanic a few years before and he ran Amsoil in everything he had. I figured if a diesel mechanic ran it in his vehicles, motorcycles, and lawn equipment it was good stuff. I have not been disappointed, I immediately noticed easier cold starts and better gas mileage in my vehicles. With the miles my familiy's vehicles travel, a once a year oil change with the extended life best synthetic oil on the market is a convenient and cost effective solution for ensuring my vehicles engines are protected with great lubrication. And the added bonus of creating less waste for our environment is big for me as well. Convenient online shopping and dependable delivery put my vehicle's lifeblood in my hands within days of ordering it. Love the product and will be using it for years to come.
Reviewed by Jean:
very good
Reviewed by daves jeep:
its a great oil I have every use in my cars!
Reviewed by Dan:
I use Amsoil oil for everything I own car pick up motorcycle lawn mowers weed eaters I wouldn't use anything less
The best is Amsoil oil.
Reviewed by Shane:
I have tried every synthetic oil over the years.Then I tried Amsoil signature series 5w-20 in my 2017 dodge Ram with the 5.7 hemi.Notice a big difference in smoothness and performance,like pouring a few energy drinks in the engine!!! I change my oil every six months, I wont be close to 25,000 miles but if I go over six months I know the engine will be okay. I have changed my oil with other synthetics that claim they can go 15,000 or one year, I changed mine at 6,500 and it was black and smelled burnt and was already starting to sludge.You won't get that with Amsoil. It cost a little more but it's well worth it !!! If your going to keep your truck or car for a long time Amsoil is the way to go,If you lease every two years don't bother.Give it a try it's THE BEST!!!
Reviewed by Binor:
The day I bought my 2005 F250 4x4 I brought it home and drained the stock oil and refilled with 0W20 amsoil and amsoil oil filter. Since that day my truck has never seen any other oil or filter. My truck is now 13 years old and it runs like the day I bought it. I change my oil once a year no more no less ! ! !
Reviewed by JC:
I have used the Signature series oil for years. I like having the protective properties of the oil with extended change intervals. I have one vehicle with over 225,000 miles runs great and uses zero oil between changes.
Reviewed by Joe:
Use this in my Mustang GT....won't use anything else. Lots of debate as far as what's best but this is my favorite.
Reviewed by David:
I have been an AMSOIL user for many years, and as a mechanical engineer know the value
of proper lubrication. When you know a company is using the best additives, and the best base stocks for their oil, the choice of where to buy is easy.
In the final analysis, AMSOIL is a bargain compared to other brands.
Reviewed by Mark:
AMSOIL is in every engine I own!
Reviewed by Michael:
Simply the best oil to use. Thank you amsoil
Reviewed by Sean:
Like all signature series it is the best oil I've used. Amsoil is one of the few oil manufacturers that shows testing results. They also sell testing kits. Their oil is top notch. Mobile 1 annual protection is basically a cheaper version of this. ( as it's not as good) if you want the best protection this is it. It also pays for itself as you can run it longer.
Reviewed by Christian Marcel:
On January 20,18, I purchased a 2008 Dodge Durango w/ a 5.7, 4x4. It had 89,000 miles on it
The average mpg was 13.4. I was not impressed, and I don't drive like speed Racer. I do love the truck the power and the ride. I had used mobil one synthetic oil and filters with no change in mpg. So I decided to invest in Amsoil. I went with the recommend 5/20 signature series. I believe go big or go home. My mpg average moved up to 14.5 mpg. I also took a 4 hour each way road trip and got 19.9 mpg at 72 mph. I thought that was good for moving an 7000lb. all wheel drive vechical.
Any way I then decided to go all in changing front & rear diff and transfer case. I am now getting an avg mpg of 15.7. where I am now in Ohio it is hilly, so once I return to flat Fla I expect even more improvement. I am a clean oil fanatic, so I installed a oil bypass system. I have 2000 miles on the oil and it still looks like new. Yes bypass system and filters and oil cost a bit but the return on investment is after 25000, If you change your oil every 4-5000 Miles. The cost of Oil & filters saved, and engine wear reduction, pays for itself in no time. I keep my vechical s for a while. My suggestion is to change over to Amsoil signature series oil and 25000 mile filters. Oil is the cheapest thing you do for your vechical, do the best and I also suggest doing the bypass system. You save money in the long run while giving your vechical the best protection out there. I am Looking for a location that will use Amsoil to flush my transmission fluid. Even if I bring it in.
Hope you find this interesting and helpful.
Reviewed by Jason:
I run this oil in my 2011 Land Rover LR4 with a 5.0L that requires synthetic oil. I've had this oil tested at the manufacturer's recommended interval of 7500 miles and there was still some life left in it. The next time I went to 9000 miles and had it tested, this time the oil was no longer good, so I'll stick with Land Rover's recommendation. This is with Land Rover's canister oil filter. Amsoil doesn't make a long life filter for it.
Reviewed by Oscar the oily otter:
Been using AMS in all my vehicles for 15 years . Have not had any engine oil related problems yet!
Reviewed by AK:
I have a Toyota Corolla I bought new in 2007. It now has over 200K miles on the odometer. It has had only Amsoil and the only thing I have had to do is normal maintenance and it still gets over 30 mpg. Amsoil is the only oil I use in all my vehicles.
Reviewed by The Duke of Earl:
Had my oil changed at a dealership. They showed me some black sticky that came out of the oil pan. I called AMSOIL with my story and they had me send in a sample and some of the oil that drained. They did a thorough check and found that the oil had not failed in any way, some other contaminant apparently fell in while under warranty gasket replacement. Great company that stands behind their products!
Reviewed by Tootall Ted:
1993 Cadillac Sedan deVille. 4.9 liter aluminum block engine. 351,136 miles!! Enough said!
Reviewed by John:
Use at the recommended Amsoil oil change intervals. Never had any engine problems.
Reviewed by Tuff:
Just and great oil .
Reviewed by Robin:
I run it and all my vehicles love it
Reviewed by Bill:
2008 Lexus
Reviewed by 1968 AMX:
I am truly convinced that AMSOIL synthetic oil is the highest quality synthetic oil in the marketplace. I believe in my heart I get more MPG with this Signature Synthetic oil. I have been using it in all my hybrid cars for last decade or so. I love the quality, customer service and want to keep supporting this quality company. Keep up the good work AMSOIL.
Reviewed by Car burns less oil:
I saw a forum post with some oil test results. Amsoil was at the top of most of them. I switched to this in my 2002 Honda s2000. I'm 1 oil change in and my car hasn't blown up yet plus it burns less oil than with Mobile 1.
Reviewed by Rookie:
Improves Gas Mileage.
Reviewed by PW John:
I have a 2007 Dodge power wagon with the 5.7 hemi. I work this truck hard, and this is the only oil that cures the notorious hemi tick even with 130000 plus miles and oil changes every 15000 miles. Well worth it if you love your truck.
Reviewed by Raptor guy:
A little pricey but peace of mind knowing that you have put the best you can buy into a truck that costs a bunch ! As crazy as I know this sounds I went from 13.1 mpg to 15 mpg only changed the oil . Is that even possible???
Reviewed by Armymedic:
I have nothing but good to write about this oil. I change my oil once a year, and change the oil filter twice a year, every 6 months, however. That's based on my driving and may not be on your driving habits. I would follow what Amsoil recommends when using their oil. Other than that my mechanic comments how great my car runs, because my last car I put on 250,000 miles without a major breakdown. I highly recommend Amsoil products.
Reviewed by Ricky:
Excellent product. Bike runs cooler and smoother
Reviewed by Bam Bam:
Just bought a 2018 Jeep Wrangler and wanted the best protection .... The same I had using Amsoil on my 1994 GMC 350k miles and 2003 GMC 230k..
Reviewed by Cleve:
I buy Amsoil because it has always worked for me. I have over 200K on my 97 Jeep, and the last 3 of my wife's vehicles went over 200K, one went to 286K before I traded it off.
Reviewed by ug_boy:
run it in my wife's CRV. I don't trust the Honda oils as they sludge out when converting to AMSOIL. Thankfully this is a new car, so I won't have this issue. A clean motor is a happy motor!
Reviewed by JD:
I am more than willing to pay a bit more than the rest to have significantly better oil protection. Read the independent reports, Amsoil is bar none the top dog.
Reviewed by Del:
I've retired 2 Ford E-350 vans, gasoline engines, both with 520,000 plus miles. I'm currently driving a third one, with 524,000.
I started using Amsoil, 100% synthetic, in each of these between 50,000/60,000 miles.
I also used the recommended Amsoil oil filter.
Changed oil every 18,000, and filter every 9,000.
Over the years and miles, I've saved myself a lot of time and money with Amsoil, over conventional oil and their oil change cycle, about 6 to 1.
Also saved a lot of money in vehicle replacement cost, because of each vehicle lasting about twice as long with Amsoil, over the normal.
Yes I'm a pleased customer!
Reviewed by Doyce:
Change oil every 10,000 to 12,000 miles. I know it would go longer, but I know for sure my bike is ready for any demand I ask of it.
Reviewed by Mailman:
I love this product. I have not had any issues with my vehicles since switching over.
Reviewed by Matt the car guy:
Never lets me down and keeps my car running like a top. Black stone lab reports always come back good viscosity turns out little thin after 5500 miles.
Reviewed by Anthony:
My 1998 Chevy 4.3 truck has 350000km right from new I have used AMSOIL products bumper to bumper and never touched the motor or transmission. Even in cold weather at -25 Celsius not plug in it will start every time.I have been using AMSOIL products for 35 years and I am not about to stop.
Reviewed by Rick:
I use the 5w30 signature oil in my 2012 Chevy Sonic that I use for business. I use the car to deliver auto parts as an independent contractor. It presently has 339,000 miles on it and going strong!!
Reviewed by Whododgeit:
It good oil and keep engine running for life
Reviewed by SammyD:
Amsoil makes one of the best if not THE best oil out there. You get great longevity out of their products, especially the signature series. I've been using that oil for a few years now and I noticed a slight increase in mileage and engine smoothness in my Accord. I just bought a new car and when the free oil changes(2 or 3) are up I'll be using Amsoil for sure.
Reviewed by Frosty mike:
Amsoil is the schit hands down the best in synthetics
Reviewed by Subaru impreza:
I have uses Amsoil for 8 years now. I go 20,000 between changes and 10,000 for a filter change in between. Never burn oil and I get constant steady power and great milage. Im convinced it the best oil on tge market...period!
Reviewed by PapaDukes:
I have been using Amsoil products for over 25 years, and now put it in my kids cars. Living in a place where dirt and heat are common place Amsoil has preformed above and beyond any other products I have ever used. With the cost of new vehicles I cannot think of a better product to extend the life of a vehicle. Goods stuff.
Reviewed by Adalarm90:
Great oil, I normally use Mobil 1 and am trying Amsoil oils. I believe they are worth it. I still think they are expensive but they seem to last. No difference in performcance(like more MPGS) but I have noticed the signature series oil lasts more time without changing color like old/worn out oil.
Reviewed by FMF Doc:
Used in my SC, 2014 Ford Raptor. Longer oil change interval if required. Dependability during the most demanding conditions.
Reviewed by Curt:
So far oil seems to be holding up well,never had any issues with Amsoil products.
Reviewed by Mark:
Amsoil allows more time between oil changes with a filter replacement at 5000 miles.
Reviewed by James:
Switched to using Amsoil and noticed a difference immediately at how quiet the engine sounded. I also noticed a bump in fuel mileage.
I currently have a 2007 Mazda 3s with 115,000 miles on it and used Amsoil since it was new and it has never had any oil related problems or leaks.
Reviewed by Acdelco:
Use this in 2 cars & 1 truck have over 105000 miles on Pt Cruiser, engine is quiet, & doesn't burn oil.
Reviewed by Toyotaholic:
2006 Toyota Corolla. 250k miles with only 10 oil changes. The engine still going without any issues. Now I use it on my 07 Fj cruiser and my 15 Toyota Corolla.
Reviewed by Jeffrey:
I have used Sig series 5W30 for the last 100000 miles on my 2003 Lexus es.Just had valve cover gaskets replaced.Tech said engine looked like new inside with valve covers removed..
Reviewed by Fernando:
My vehicle runs great
Reviewed by Manny:
I have been using AMSOIL Synthetic oils in my vehicles for over 10 years. Two Saturns (a 2000 SL2 & a 2002 SC2), Two Hyundai Elantras (2014 & 2017), and a GM Sonic (2015) . I have never had an oil related problem with any of the engines. There was significant affect on the LACK or wear on all of the engines I would recommend AMSOIL them to anyone who purchases a new car, or a used car with not many miles on it.
P.S. I have been buying NEW automobiles since 1970. I switched to AMSOIL synthetic motor oils in 2004, and have never used anything else in my automobiles (and my lawn mowers).
Reviewed by Chuck:
Used Amsoil OW-20 oil in the last two Hondas I've owned and currently in my 2017 Honda Civic turbo. Aside from the fact that Honda makes a very durable Vehicle the use of Amsoil OW-20 has without question lengthened the lifespan of my vehicles. I put close to 200,000 miles on the previous Honda's I owned and expect with normal maintenance to do the same or even better with my current Honda.
Reviewed by Barry:
Wouldn't think about any other product for my 2007 Silverado that has 223,000 miles on it. I started using it back when i purchased my first new 2000 Silverado and have used it ever since.
Reviewed by Timmy:
I have been running Signature Series Synthetic Motor Oil in my 2010 FJ Cruiser (4.0 V-6) since it was new. The vehicle now has 146,000 miles on it. I drive 140 miles per day for work, towing a small boat for part of the commute. I consider the use of my vehicle pretty strenuous considering 1000 plus feet of elevation change, temps from 0 degrees to 105, all on horrible highways from the desert to the mountains, including a little off road crawling. I grew up around garages and race cars and do my own maintenance / oil changes and am always impressed with how good the oil looks when I drain it, even after max mileage intervals. I have had zero mechanical issues and get the same fuel mileage as when the truck was new. The one time I had a shop change my oil due to time constraints and other service, the mechanic commented the used oil looked and felt fantastic still, at 12,000 miles.
I use Amsoil products everywhere I can......tranny, differentials, transfer case. I'm sold on Signature Series Oil for all of my rigs, and sold on the people and service I get from Amsoil.
Reviewed by Ed:
Awesome oil. Makes my Cecile run smoother and quieter. I love Amsoil.
Reviewed by H20EXPLORER:
In my 19 year old truck with 257000 miles, the performance improvement is noticeable.
Reviewed by JD:
Started using the Signature Oils last year. I can tell the difference from regular synthetic oil. In the long run it's probably less expensive to use the Signature because of more then double the change interval.
Reviewed by Mike:
You can't beat Amsoil, and at the price when you become a preferred member, the price is as good or better than most other oils.
Reviewed by Josh:
Amsoil products are constantly the highest quality and the best protection for all my vehicles. It has revived and made my daily driver (over 20 year old vehicle) run like a top. It is the prefect addition to any vehicle that you want to get long use out of, and regardless of the environment have the best protection for your engine.
Reviewed by Pepe:
Always heard about it in the past, but never tried it. Finally tried it and will always use it!!!
Reviewed by Gutsi:
I've been using Amsoil in all my cars (6) for over 10 years. My 07 Honda Fit just turned 400k miles and is going strong, along with all my other cars running Amsoil. And I save money by only having to change the oil every 15k miles. Excellent product that actually saves me money in the long run.
Reviewed by Mk:
I drive 150 miles daily and amsoil helps my engine run smooth and cool.. Even when I'm due to change it feels like oil not syrup... Great price for a great product.. would buy amsoil again and again.. Thanks amsoil
Reviewed by Tony:
Have previously trid various oils in my 2012 Boss 302 & Amsoil 5/50 is been my choice since it came out .Great Stuff''''''
Reviewed by Ken:
I installed 5-30 Sig in my Tahoe last May. Through this May I completed 10,000 miles including through a winter here in Northern Michigan. The shop I use was touting another oil and warned me that no oil could be used all winter in multiple cold or very cold start conditions and last through the whole winter. Well, I had the oil tested after a year and even in this harsh environment, the oil still had 3,000 to 5,000 miles of life left. Kudos to the product. Yes the Tahoe does use some oil--maybe 3 quarts total over that period, but it did amaze me that the oil held up and was still good after a year. Fuel economy on a road trip to Rochester, MN with a change of trans fluid to Amsoil synthetic showed an increase in mileage from about 19 to a solid 21-22 MPG. Fluids are the only change and this vehicle is otherwise a gas hog.
Reviewed by Short Circuit:
I have used this product for over 20 years. I have actually torn down an engine (oil pump shaft broke) that I used this oil in close to its whole life and the internals of the engine were remarkable. They showed very little wear and tear and none of the typical deposits you would see in an engine with 135,000 miles on. I know there is a lot of churn about who's best and so on but speaking for this oil it's worth every penny. Your buying peace of mind.
Reviewed by Jerry:
Good product
Reviewed by Pgf1:
I have recently changed to this after considerable research,
Reviewed by Lee:
Since I start using Amsoil signature zero 20 100% synthetic oil on my truck start ups Are much quicker and Engine runs more smoother and more power.My gas mileage has improved significantly
Reviewed by Ed:
Start using AMS oil 10 years ago. After 250,000 miles car is still running great.
Reviewed by Theron:
Lots of confidence
Reviewed by Don the mechanic:
This Product saves money. It gives you great protection for your engine over a longer period of time, so you do not have to change it as often.When used with the Amsoil Ea Oil filter, it does even a better job. So in the long run it is more economical to use.
Reviewed by ED:
As I have gotten older I like how I now only have to change the oil only once a year. I take care of 6 cars (mine and my kids) so this really helps me do other things besides changing oil.
Reviewed by John:
Long life offered
Reviewed by Lambshark:
Been using Amsoil for years with awesome success. I always use their oil filters as well.
Reviewed by Harvdog:
We love the oil , filters and grease. Currently we have just over 411,000 miles on our 2004 Honda Element. Thanks for providing such a high quality lubricant.
Reviewed by Tito:
I use this product in my vehicles that specify 0W-20. Since switching, the engines are much quieter and seem to run cooler.
Reviewed by Mike:
I've been using Amsoil Signature Series in my 2010 Toyota truck exclusively. Eight years later and 200,000 km later it still runs like new. I wouldn't think of using anything else.
Reviewed by Satisfied:
Great for my new air-cooled Generac 11kW automatic backup generator. It was consuming another well-known brand of synthetic 5w-30EP oil at an unacceptably excessive rate. After researching the various oil properties and what others with air-cooled generators down in hurricane country use, I decided to try Amsoil 5w-50. After switching my oil consumption completely stopped. I use it or Amsoil 0W-40 in all my small engines now.
Reviewed by David:
Amazing product so good im happy i made the right Choice
Reviewed by PJ:
I started using this about a year ago and now have in my two motorcycles, my fiancés bike and a couple of friends.
Reviewed by CJ:
The Amsoil Products not only protect my vehichle to the highest standards,they save me time and money.
Reviewed by Jeff:
We have used Amsoil products in all of our vehicles for the past 8 years. The engine in our 2010 Equinox is still running strong with 155,000 Amsoil miles. We have used the Signature Series 5W-30 for the past 75 of so and even with the high mileage we lose almost no oil between changes. We do change at about 12K to 15K though due to the heat in the summers of central Virginia.
Reviewed by Gary B:
I use this in all for vehicles I own for the last 20 years. My V10 Motor Home, my Hemi SUV, my V-6 convertible beach cruiser and my classic convertible street rod. Extremely versatile and has never let me down.
Reviewed by Anson:
I've been using amsoil 35 years, I believe it's what gave me 450000 miles on on a 77 Porsche. Today I used it in my 18 Kia soul turbo and 16 Kia turbo koup, read the specs it's the best oil for any application.
Reviewed by BATMAN:
This is the only oil I use in all of my vehicles.
Reviewed by Scott:
My engine has 245,000 miles on it, (second engine in the car) and I have used Amsoil for about 2 years. I recently had an oil analysis by Blackstone Labs, and they told me that the wear I had represented about 5,800 miles, but I had actually 22,600 miles on that oil change!! I could have run until 25,000 miles, so next time I will.
Reviewed by TDR:
Use this in my 2017 Kia 3.3 and like that I save money with my longer oil change interval.
Reviewed by Mike:
My vehicles never run better. I like the convenience of changing my oil once a year.
Reviewed by Ed:
I have been in the automotive industry for 45 years and have seen all kinds of oil and lubricants. Many claim amazing things. My personal experience with Amsoil has been long term. First my race bike. Nothing compared to the performance of Amsoil. Runs cooler, lasts longer, overall good results. My truck now has 343000 miles. Still does not use any oil. My Harley picked up 3 miles/gallon and runs cooler.
Reviewed by Tommy:
Great product
Reviewed by Tone Capone:
Amsoil is the only well we use in our cars. Are even got my family and some of my friends to switch
Reviewed by Loop:
Great oil
Reviewed by Dave:
Here in Edmonton, Alberta. We've got crazy And confusing weather. The cold gets up to -50 So this Oil does Absolutely great performance. You've gotta have this in coldest weather.
Reviewed by Corvette Mike:
Just recently changed my C6 Corvette to Amsoil. Looking for cooler operating temps and the reduction of lifter noise on cold starts. Took a 200 mile trip ran about the same temps as my previous synthetic oil. Engine seems a little quieter with cold starts. The cruising season is just getting started her in Ohio. The true test will be when I track the car at some of our clubs autocross races and high speed events. Two other friends have witnessed improvements with this product and switched based on their recommendations. They both race frequently and push their Vettes to the limit without any issues.
Reviewed by juicey j:
seems to be working good. I put a 100,000 miles a year on. does not keep engine as clean as redline. lots of varnish from amsoil at the 100,000 mile mark. redline at a 100,000 looks just like knew inside the engine.
Reviewed by Larry:
I started using this oil many years ago. When first bought it I used your oil filter and oil I put in my Ford 150 pickup truck 2002. I left in my truck for 6 weeks and drained the OIl and put in new filter and oil this cleaned the inside of my motor now the oil stays very clean. I now have over 363,000 miles on my truck still running strong
Reviewed by windom:
Amsoil oil is amazing. You are the best.
Reviewed by Nosocs:
I use in a 1999 Acura CL/3.0 coupe...starteed @ 40,000, and have used for last 180,000...car has 220,000, and runs as shmooov as any vehicle out there....@ 185,000, I changed the transmission fluid, using AMSOIL transmission fluid...aGain.....shmoove shifting....Best product for any vehicle!
Reviewed by Jake:
Best synthetic on the market. It's the only thing I use in my truck.
Reviewed by Serge:
As always, AMSOil didn't disappoint. Ordered this for my mom's 2016 Honda Accord.
Reviewed by Jose the big burrito:
Super impressed with all The Amsoil products. Extebdes oil change intervals makes it a no-brainer.
Vehicle runs so much smoother, better gas mileage, it's a win-win
Reviewed by Tony:
Use for my car
Reviewed by Mel:
I always say that if Amsoil don't know how to make Synthetic Oil NO ONE does..
Because they have been the first since 1972..
Reviewed by rdj519:
300000 miles with once a year oil change. Amsol is the best
Reviewed by ...:
Great products
Reviewed by Rusty:
I use Amsoil in everything machine I own. That Amounts to one diesel pickup to three gas pic up and two mustangs one being a 2011 Shelby GT500
Reviewed by Dennis Oldblood:
Amsoil protect my crankshaft when my oil pump failed and I get better gas milage, epa rating for my car is 35 mpg and I repeatedly hit 40 mpg.
Reviewed by Chris:
2010 Toyota sequioa w/ 200k on the clock.
Doubled oil change interval to 10k, doesn't use a drop between changes. Frequently idle and tow in hot Mississippi weather. Noticeably quieter valve operation over other top shelf synthetics. I just did a 200k service and noticed there is zero sludge in the engine. It was as sparkly as a transmission.
I expect 300-400k out of this engine but it is a Toyota not a Ford!
Reviewed by Los:
The best oil I've ever used.! Hands down!
Reviewed by Poncho pete:
2013 Kia Rio o my has a 3.5 qt capacity. Best oil I've seen for this scenario
Reviewed by Tim:
Only Oil I will every use on my high performance cars
Reviewed by Chance:
Used for engines and trans. I researched oil products IE: Royal Purple, Mobil 1, and Amsoil. Amsoil won.
Reviewed by Brian:
On thanks
Reviewed by Rob:
My new Outback calls for 0-20 oil. This is a difficult thing to believe in considering I am old sckool and would rather have a heavier oil in the motor.
So if I am going to put thin oil in this new car, then I want the best I can get.
I been using AmsOil products for a while now and have no complaints .
Reviewed by Ryan:
My 302 race engine loves it! My old oil would barely last 1,500 miles but signature series is still golden after 5k! Thinging about swithing everything i have to it and see how a stock engine does up to 15,000!
Reviewed by Hawk:
The best oil I have ever used and I tell everyone I know.
Reviewed by Dan the man:
For the long mileage & city
Reviewed by Joe:
Unlike other oils I have tried in the past this stuff seems to work very well in my 5.3 liter vortex, she runs much quieter and cooler then before, I was a big a mobile 1 user before trying the amsoil and I've been using it ever