If a vehicle exceeds the oil change standard by 1000 miles (approximately 1600 kilometres), it may cause multiple engine hazards. The lubricating performance of deteriorated oil will decrease significantly, leading to the rupture of the oil film between metal components. Measured data shows that the wear rate may increase by 3-5 times, with the wear amount during the first 30 seconds of cold start accounting for as high as 70%. In severe cases, this can lead to crankshaft seizure, with repair costs typically exceeding 5000 Malaysian Ringgit. Additionally, degraded oil's thermal conductivity decreases by 50%, potentially causing engine overheating, accompanied by an 8%-12% increase in fuel consumption and reduced power output efficiency. It is best to strictly adhere to the maintenance manual intervals (mineral oil: 5000 kilometres/6 months; full synthetic oil: 10000 kilometres/12 months). Regular maintenance effectively prevents irreversible damage such as piston scoring and valve seal deterioration, thereby extending engine lifespan.
