How Often Should Passenger Car Engine Oil Be Changed?

[LaEva]

Passenger car engine oil should be changed every 10,000 kilometers or once a year. The functions of engine oil are: 1. To separate the relative sliding surfaces between pistons and cylinders, as well as between main shafts and bearing bushes, thereby reducing component wear; 2. To carry heat back to the oil tank and dissipate it into the air, assisting the radiator in cooling the engine. Classification of engine oil: 1. Conventional mineral oil; 2. Semi-synthetic oil; 3. Fully synthetic oil. The method for changing engine oil is: 1. Lift the vehicle, remove the underbody cover, and place a container of approximately 10 liters beneath the oil drain plug; 2. Loosen the drain plug, use an air gun to blow for two minutes at the oil filler port, tighten the drain plug after draining, and wipe it with a tissue to check for leaks; 3. Reinstall the underbody cover, lower the vehicle, and use a funnel to add new oil through the filler port.