What Are the Common Knowledge Points About Engine Oil Change in Car Maintenance?

[LeviAnn]

Common knowledge about engine oil change in car maintenance is as follows: 1. Oil change interval: Generally, 4S shops recommend changing the engine oil every 5,000 kilometers or 6 months. However, in actual vehicle usage, we can decide based on the type of oil used. For mineral oil, you can follow the 4S shop's recommendation of changing every 5,000 kilometers or 6 months. For semi-synthetic oil, we suggest changing every 7,500 kilometers or 8 months. As for full synthetic oil, it can be changed every 10,000 kilometers or once a year. 2. Meaning of oil viscosity grade: In the oil viscosity grade label, "W" stands for winter. The number before "W" indicates the oil's low-temperature fluidity. The smaller the number, the better the oil's low-temperature fluidity. The number after "W" represents the oil's viscosity grade at 100 degrees Celsius. The larger the number, the better the oil's lubrication and protection for the engine under high-temperature conditions.

[StGia]

I haven't been driving for long, but I've realized that changing engine oil is quite important. It keeps the engine running smoothly and prevents part wear. Generally, you should change to fresh oil every 5,000 to 10,000 kilometers or every 6 months. Otherwise, the old oil thickens and can clog the engine internals, affecting the car's performance. Last time I checked the oil level, I noticed the oil on the dipstick was a bit dark, so I went straight to the shop and switched to synthetic oil. The mechanic said this type of oil has better wear resistance—though more expensive, it lasts longer. You should also pay attention to how to check the oil level: park the car, wait for the engine to cool, then pull out the dipstick to see if it's within the normal range. For maintenance, it's best to find a reliable shop—they'll also check the oil filter and pipes to avoid future issues. Overall, keeping the oil fresh means fewer car troubles and a more worry-free drive. It's a practical tip I learned from experienced drivers when I was learning to drive.

[VonLila]

I've been driving for over 20 years, and my knowledge about oil changes has mostly come from accumulated experience. There are just a few key points: engine oil serves to lubricate, cool, and clean; failing to change it promptly can lead to engine overheating and damage. I recommend changing the oil every 7,500 kilometers or so, and no longer than a year, especially with stop-and-go city driving, which calls for more frequent changes. I once delayed an oil change, and the result was increased fuel consumption and louder engine noise—fortunately, I fixed it in time without any major issues. When choosing oil, synthetic is better suited for newer cars, while mineral oil works well for older models. Don’t use the wrong viscosity index, such as 5W-30, incorrectly. Also, when getting an oil change, find a professional technician—they’ll handle the oil pan and filter, saving you the hassle. Remember, maintenance isn’t just about oil changes; it’s also about checking the entire system’s condition to extend your car’s lifespan.

[Tate]

I often tinker with my car at home to change the oil, which saves money and gives a sense of accomplishment. First, prepare the tools: use a jack to stabilize the car, loosen the oil pan screw to drain the old oil into a pan, replace it with a clean oil filter, and before adding new oil, it's best to check the car manual for the recommended oil type, such as full synthetic or semi-synthetic. Avoid using oil that's too old, as it can carry contaminants that harm the engine. The process is simple: drain all the old oil, then add new oil up to the middle mark on the dipstick. An extra reminder: don't dispose of the old oil carelessly; take it to a recycling station for environmentally friendly and safe handling. The whole process takes about half an hour, and with practice, even beginners can handle it. You only need a few wrenches, and it's quite enjoyable.