How many kilometers should a car drive before changing the engine oil?
2 Answers
There is no fixed mileage for changing the engine oil in a car. Generally, conventional engine oil should be changed after about 5,000 kilometers; semi-synthetic oil should be changed after about 7,500 kilometers; and full-synthetic oil should be changed after about 10,000 kilometers. The frequency of oil changes depends on factors such as the usual driving environment, personal driving habits, and time intervals. If you frequently encounter traffic jams, drive in areas with a lot of dust, or in extreme temperatures (either hot or cold), the oil should be changed earlier. For vehicles that often drive on highways with minimal traffic congestion, the oil change interval can be extended. Engine oil plays a crucial role in lubricating and reducing friction, aiding in cooling, sealing to prevent leaks, preventing rust and corrosion, and cushioning shocks in the engine.
In my years of driving experience, the mileage for oil changes truly depends on many factors. I usually start by checking the vehicle manual's recommendation, typically between 5,000 to 10,000 kilometers, but this isn't a hard rule. If frequently stuck in city traffic or making short trips, which causes more wear, I change it earlier, around 4,000 kilometers. For long highway drives, it can last up to 8,000 kilometers. Another point is the type of oil—I extend the interval when using synthetic oil because it offers better protection. Engine health directly affects fuel consumption and lifespan, so regularly check the dipstick's oil color; if it turns black or the level is low, address it immediately. DIY oil changes can save some money, but you need the right tools—otherwise, a professional shop is more convenient. The general principle is to adjust flexibly and not rigidly stick to the numbers.
