What Happens If Engine Oil Is Not Changed for a Long Time?

[LaEmma]

Not changing the engine oil for a long time will accelerate engine wear and affect engine performance, significantly reducing its sealing, lubrication, and cooling effects. The impurities in the oil will wear down internal components, thereby shortening the engine's lifespan and increasing the likelihood of malfunctions, which can pose safety hazards. Engine oil is often referred to as the 'blood' of the engine, as it plays crucial roles in cleaning, sealing, heat dissipation, lubrication, cushioning, and rust prevention within the engine. Over time, engine oil becomes thinner and deteriorates. Typically, full synthetic oil should be changed every 10,000 kilometers or once a year, semi-synthetic oil every 7,500 kilometers or every 7-8 months, and mineral oil every 5,000 kilometers or every 6 months.