GOBI DRY Tank Manual

GOBI DRY Tank prevents water from getting into your fuel tank through the tank ventilation. This stops the growth of bacteria in diesel tanks and protects fuel tanks made in metal from corrosion.

GOBI DRY provides an environmentally friendly and safe alternative to toxic chemicals fuel additives. The crystals can be re-used over and over again, which will spare you from further investments.

Normally, water enters the tank by the moist air passing through the tank ventilation. This accelerates when using the engine but will also be the result of daily temperature variations. GOBI DRY Tank absorb this moisture before it reaches the fuel tank and only lets through dry air.


In the box

To fill up GOBI DRY Tank apply the large O-ring between one end plate and the glass tube. Hold the glass tube is place with the open end pointing upwards when the crystals are poured in.

With the second O-ring in place, put the second end plate on top of the tube. Squeeze the two end plates against each other while screwing on the last bolt which holds together the entire dehumidifier.

Now make sure the two hose connectors have O-rings in place and gently screw them in place.


Fit in place

The majority of boats have a 16mm vent hose. GOBI DRY Tank comes with two 16mm adapters. If your hose is of a different size, you can easily connect another nipple with 1/2 “thread.

The simplest form of connection is to find a suitable place where the GOBI DRY Tank fits. Preferably close to the highest point of the hose. Cut the hose and fit the hose ends on each side of the GOBI DRY Tank. Secure the connection with hose clamps.



If you often experience overflow trough the ventilation you should install a 3-way tap with the ability to close the flow into the GOBI DRY Tank while filling the tank.

If you can run a small hose to a safe place you will then also spare the nature.

If the fuel reaches the crystals in GOBI DRY Tank they might lose efficiency and you should replace them.



Time in between regeneration vary on the size of the tank, how often and how long you use the engine. An important factor is also the predominant weather conditions where the engine is used and also stored in. A normal user needs to regenerate once a year, but deviations up and down are just as common.

When the crystals are deep dark green, they have absorbed the maximum amount of water and need to be regenerated. Regeneration is done by heating.

Open the container and carefully pour over all the crystals in suitable container for heating.

Select one of three main methods for regeneration

  • In strong sunlight and dry weather, the crystals can dry on a large plate. Make sure that the crystals are not stacked on top of each other. Duration – at least a day.
  • In a frying pan with the lowest possible heat. Stir every now and then. Duration 1-2 hours
  • In the oven at 120 degrees Celsius (248 degrees Farenheit). Duration 1-2 hours