How Often Should Engine Oil Be Changed When a Car Is Not Used for a Long Time?

[FernandoRose]

When a car is not used for a long time, the engine oil should be changed every 6 months. The method for changing the engine oil is as follows: 1. Lift the car, remove the underguard, and place a container of about 10 liters under the oil drain plug; 2. Unscrew the oil drain plug, use an air gun to blow for two minutes at the oil filler port, then tighten the oil drain plug after draining and wipe it with a tissue to check for leaks; 3. Reinstall the underguard and lower the car, then use a funnel to add new oil through the oil filler port. The functions of engine oil include: lubrication and anti-wear, assisting in cooling, cleaning, sealing to prevent leaks, rust and corrosion prevention, and shock absorption. Engine oil can be classified into: 1. Conventional mineral oil; 2. Semi-synthetic oil; 3. Full synthetic oil.