When is the Best Time to Change Engine Oil?

2 Answers
McLondyn
07/28/25 9:01pm
Engine oil change intervals depend on the type of oil used in the vehicle. Here are the details: 1. Generally, engine oil is divided into three types: full synthetic, semi-synthetic, and mineral oil. Full synthetic oil typically needs to be changed every 10,000 kilometers or once a year. 2. Semi-synthetic oil usually requires changing every 7,500 kilometers or every 7-8 months, while mineral oil should be changed every 5,000 kilometers or every 6 months. 3. Additional information: Engine oil, also known as motor lubricant, serves multiple functions including lubrication and wear reduction, aiding in cooling, sealing against leaks, preventing rust and corrosion, and providing shock absorption.
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OAlivia
08/12/25 1:43am
I think changing engine oil depends on the specific situation. My car noticeably has louder engine noise and slightly increased fuel consumption every time it reaches around 5,000 kilometers. The dealership recommends changing it every six months or 7,500 kilometers, whichever comes first. But I've noticed that frequent city driving leads to more engine carbon buildup, causing the oil to degrade faster. Last time during maintenance, the mechanic mentioned that for my daily short commutes of just over ten kilometers, the oil temperature doesn't get high enough, which can lead to sludge buildup. He suggested changing the oil about 1,000 kilometers earlier. Also, if the engine revs loudly and accelerates slowly during cold starts, it's another sign that the oil needs changing. In short, don't just rely on mileage—consider your driving habits and the car's condition for a more accurate approach.
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