
Petrochemical oil products are superior to petroleum oil, but they are also relatively more expensive. Here is some information about motor oil: 1. Composition: Motor oil consists of base oil and additives. Base oil is the main component of lubricating oil, determining its fundamental properties, while additives are an important part of lubricating oil. 2. Types of motor oil: The SAE viscosity classification for winter oils includes grades such as 0W, 5W, 10W, and 15W. The letter 'W' stands for winter, and the smaller the number before 'W,' the lower the low-temperature viscosity and the lower the minimum applicable temperature. The SAE viscosity classification for summer oils includes grades such as 20, 30, 40, and 50, where a larger number indicates higher viscosity and higher maximum applicable temperature.


