Why Must Cars Have Their Engine Oil Changed?

[DamianFitz]

Cars need engine oil changes for the following reasons: 1. To improve and enhance lubrication for moving friction components in the engine. 2. To extend the engine's service life. 3. To optimize the engine's lubrication conditions and reduce friction between moving parts. Steps for changing engine oil: 1. Lift the vehicle, remove the underbody shield, and place a container with approximately 10-liter capacity beneath the drain plug. 2. Loosen the drain plug, use an air gun to blow into the oil filler opening for two minutes. After complete drainage, tighten the drain plug and wipe it with a tissue to check for leaks. 3. Reinstall the underbody shield, lower the vehicle, and use a funnel to add new oil through the filler opening.