First, mineral engine oil. Mineral engine oil has the longest development time in the whole engine oil system, but the lubrication effect is the worst. Because of this, many car companies are worried that car owners will use mineral oil, so they will set the oil change interval at 5000km. So the oil change cycle we see in the driver's guide refers to mineral oil.

Second, semi-synthetic engine oil. As a derivative of mineral engine oil, the price and positioning of semi-synthetic engine oil is much higher than that of mineral engine oil. Because of this, the replacement cycle of semi-synthetic engine oil is generally around 8000km, and you can never replace it after 5000km. Of course, there is no problem to replace it, but the wallet will be under pressure!

Third, all of synthetic engine oil. At present, synthetic engine oil is the most widely used engine oil in the market, and even some engine oil brands have slogan that their engine oil can be 18000km without replacement! Of course, this has a certain advertising effect, but in synthetic engine oil, the replacement cycle is generally around 65,438+00,000 kilometers. Because of this, many car owners will choose 1000 km to change the oil when changing the oil.