The engine is the most important part of the car, its maintenance is a direct impact on the performance of the car and life. First of all should do a good job of "three filters" of the cleaning work, the car's "three filters" refers to the air filter, oil filter and gasoline filter. Second, to maintain the crankcase ventilation in good condition, most of the gasoline engines are equipped with PCV valve (crankcase forced ventilation device), to be regularly removed PCV valve around the pollutants. And then regularly clean the tank. Try to prevent the engine water tank rust, scaling and other common problems. Finally choose to buy the right oil.