. The cooling system should be completely flushed and refilled about every 00 months. The level, condition, and concentration of the coolant should be checked periodically. (A 00/00 mix of anti-freeze and water is usually recommended.) DIYers, never remove the radiator cap until the engine has thoroughly cooled! The tightness and condition of drive belts, clamps, and hoses should be checked by a pro. Oil - Change your oil and oil filter as specified in your manual - more often (every 0,000 miles) if you make frequent short jaunts, extended trips with lots of luggage