How Often Should Car Engine Oil Be Changed?

2 Answers
McMakayla
07/24/25 11:17pm
Car engine oil change intervals vary depending on the type of oil: 1. Conventional oil should be changed approximately every 5,000 kilometers or every 6 months; 2. Semi-synthetic oil should be changed approximately every 7,500 kilometers or every 9 months; 3. Fully synthetic oil should be changed approximately every 10,000 kilometers or every year. The functions of engine oil are: 1. To reduce friction and high temperatures; 2. To minimize gas leakage and prevent contamination from external pollutants; 3. To prevent contact between water, air, acidic harmful gases, and engine components; 4. To cushion the pressure rise in the engine cylinder ports; 5. To clean away dirt generated on the surfaces of engine components.
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DonovanMarie
08/10/25 3:20pm
Let me share some insights on oil changes from my daily driving experience. Generally speaking, you should change the oil every 5,000 to 7,500 kilometers. If you're using high-quality synthetic oil, it can last up to 10,000 kilometers without issues. The key is your driving habits: I often commute short distances in the city with lots of traffic lights, which makes the engine prone to sludge buildup, so I change it earlier. There's also the time factor—if I only drive a few thousand kilometers within six months, I still change it once to prevent oil degradation. I strongly recommend checking your vehicle manual—it provides precise recommendations based on your car model. For example, my current car's manual suggests every 7,500 kilometers or 6 months for optimal maintenance. Don't wait until the oil turns black; regularly check the dipstick to monitor oil levels and keep your engine healthy. Remember, frequent oil changes can extend your car's lifespan and reduce the hassle of major repairs.
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