What does SAE in motor oil refer to?

1 Answers
StKira
07/30/25 12:02am
SAE in motor oil refers to the viscosity grade of the oil. The classification method for oil grades is: 1. AB series: gasoline and light-duty diesel engine oils; 2. C series: catalyst-compatible engine oils; 3. E series: heavy-duty diesel engine oils. The functions of motor oil are: 1. To reduce friction and high temperatures; 2. To cool and lower temperatures; 3. To clean and remove contaminants; 4. To dampen vibrations and cushion impacts; 5. To prevent rust and corrosion. Motor oil, also known as engine lubricating oil, includes: 1. Base oil: the main component of lubricating oil, which determines its basic properties; 2. Additives: these compensate for and improve the shortcomings of the base oil's performance.
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