The maintenance cycle of normal engines abroad is relatively long. The maintenance cycle of conventional naturally aspirated engines is1-10.5 million kilometers, and the maintenance cycle of turbocharged engines will be shortened accordingly. On the one hand, because the authentic rate of foreign engine oil is higher than that of domestic engine oil, and the road conditions and environment abroad are better than that of domestic engine oil, the engine oil condition is still excellent after the maintenance cycle.

The domestic environment and road conditions are slightly complicated. Dust and stop-and-go road conditions are a big test for the engine. In addition, the domestic counterfeiting rate is high, the quality of some air filter elements is not high, and the filtering effect will not be very good, which greatly reduces the service life of engine oil. Moreover, the counterfeiting rate of the oil industry is quite high at this stage, which also affects the service life of the overall market to some extent. Therefore, many car owners in China change their oil for 5,000 kilometers.

Although the domestic 5000km oil change cycle is too short, it is not unreasonable. After all, the quality of domestic air filter elements and the genuine rate of engine oil are not high, and the harsh use environment and complicated road conditions will affect the life of engine oil more or less.