How Often Should Car Engine Oil Be Changed?
2 Answers
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.
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.