What does the gear oil model mean and what does sae mean?

Gear oil is a kind of lubricating oil with relatively high viscosity. It is mainly used in automobile gearboxes. It can lubricate various gears in transmissions, reducers and differentials to prevent tooth surface wear, scratches, sintering, etc., and extend the use Life, improve the efficiency of transmission power. All gear oil packages will have the GL- logo. In fact, this is the type of gear oil. What these gear oil models represent is unknown to many people.

Gear oil model represents the grade classification of gear oil. The American Petroleum Institute has divided the API performance of gear oil, which can be divided into GL-1, GL-2, GL-3, GL-4, GL-5, GL -6 and other performance levels, the gear oil packaging has corresponding level marks.Attentive friend alsoFindThere is a logo similar to SAE 80W/90 on the packaging. Many people have never understood what SAE means.

SAE is the English abbreviation of American Society of Automotive Engineers. It refers to the classification of gear oil viscosity grades. Gear oils can be divided into single-stage viscosity type and multi-stage viscosity all-weather type, and single-stage viscosity type can be divided into high temperature type and low temperature type.

The high temperature type label is similar to SAE90, SAE140, the number marked after SAE indicates the viscosity of the oil at 100℃, the larger the number, the greater the viscosity of the oil;

The label of the low temperature type is similar to SAE75W, W means low temperature type, 75 is the viscosity, the smaller the number, the better the low temperature performance;

The multi-grade viscosity all-weather type label is similar to SAE80W/90, the front of the slash indicates the winter low temperature viscosity performance, the smaller the number, the lower the low temperature viscosity, the better the fluidity, and the more low temperature resistance; the number after the slash indicates the high temperature viscosity performance, the larger the number , The higher the high temperature viscosity, the more high temperature resistance.