A, has A certain viscosity viscosity-temperature characteristics.

　　B, has certain oily (lubrication).

　　C, has a high resistance to oxidation stability.

　　D, has good anti-wear type.

　　E, no glue to precipitate during combustion and decomposition.

　　F, does not contain additive engine components caused by corrosion and abrasion.

　　G, no mechanical impurities and moisture.