Why Do Vehicles Need Oil Changes?

1 Answers
LeDaniel
07/30/25 7:03am
Vehicles require oil changes because engine oil serves four major functions: cooling, lubrication, cleaning, and sealing. It plays a crucial role in ensuring the proper operation of the engine. As engine operating time accumulates, the oil becomes contaminated due to factors such as high-temperature oxidation, wear particles from mechanical components, and fuel vapor corrosion. Additionally, engine oil naturally depletes during normal usage. Vehicle owners should regularly check both the oil level and its contamination level, which is why periodic oil changes are necessary. If the oil level falls below the specified threshold and affects engine performance, it can cause fatal damage to the engine.
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