[Car basic knowledge]What does the car oil label mean?

Generally speaking,carThe label on the oil is the classification of the viscosity of the automobile engine oil adopted by the Society of Automotive Engineers (SAE).This is a classification of viscosity grades, which willlubricating oilIt is divided into high temperature type for summer, low temperature type for winter and all-weather type for winter and summer. The specific classification of automobile engine oil is 6 kinds of winter oils, 4 kinds of summer oils, and 16 kinds of general-purpose oils for winter and summer.in 1. The oil grades for winter are: 0W, 5W, 10W, 15W, 20W, 25W. The symbol W stands for Winter, which is the abbreviation of Winter. The smaller the number before W, the lower the low-temperature viscosity, the better the low-temperature fluidity. The lower the applicable minimum temperature; 2. The motor oil grades for summer cars are: 20, 30, 40, 50. The higher the number, the higher the viscosity and the higher the applicable maximum temperature; 3. Winter and summer general oil grades are: 5W/20, 5W/30, 5W/40, 5W/50, 10W/20, 10W/30, 10W/40, 10W/50, 15W/20, 15W/30, 15W /40, 15W/50, 20W/20, 20W/30, 20W/40, 20W/50, the smaller the number representing the winter part, the larger the number representing the summer part, the higher the viscosity and the larger the applicable temperature range . (1) High temperature type (such as SAE20～SAE50): The number indicates the viscosity at 100°C, the larger the number, the higher the viscosity. (2) Low temperature type (such as SAEOW～SAE25W): W means only used in winter. The smaller the number, the lower the viscosity and the better the low temperature fluidity.

(3) All-weather type (such as SAE15W/40, 10W/40, 5W/50): it means that the viscosity grade at low temperature meets

The requirements of SAE15W, 10W, and 5W and the viscosity grade at high temperature meet the requirements of SAE40 and 50 respectively, which are universal in winter and summer. There is no problem with using 5W-30 oil in Sichuan.

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