What does oil life mean?

1 Answers
MacEmily
07/30/25 3:24am
Oil life refers to the usable duration of engine oil. When the oil has been used beyond the specified time period or mileage, it must be replaced. Engine oil also has a shelf life, and if it exceeds this period, its lubricating and adhesive properties will deteriorate, leading to unnecessary wear on the engine. The lifespan of engine oil is not calculated based on mileage but rather on the engine's operating time. Conventional oil typically lasts between 100 to 150 hours, while synthetic oil can last from 200 to 300 hours. When manufacturers recommend replacement intervals, they calculate it as follows: assuming an average speed of 80 kilometers per hour, 100 hours of operation would equate to 8,000 to 12,000 kilometers. For conventional oil, it is advisable for car owners to change the oil approximately every 5,000 kilometers.
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