What is the highest grade of motor oil?

1 Answers
StHadley
07/29/25 11:21am
Motor oil's highest grade is SA. Overview of motor oil: Motor oil, also known as engine lubricating oil, is called Engine-oil in English. Its density is approximately 0.91kg×10 cubic. It serves multiple functions for the engine including lubrication and wear reduction, auxiliary cooling, sealing and leak prevention, rust and corrosion protection, as well as shock absorption. Composition of motor oil: Motor oil consists of two parts: base oil and additives. Base oil is the main component of lubricating oil, determining its fundamental properties. Additives compensate for and improve the deficiencies in base oil performance, imparting certain new characteristics, making them an essential part of lubricating oil.
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