SM

Oils with API SM approval (specification) (since November 30, 2004)

Motor oils for modern gasoline (multi-valve, turbocharged) engines. Compared to the class SL engine oils that meet API SM requirements must have higher protection against oxidation and premature wear of engine parts.

In addition, there are increased standards regarding the properties of the oil at low temperatures. Motor oils of this class can be certified according to the ILSAC energy saving class

Engine oils that meet API requirements SL, SM can be used in cases where the class is recommended by the car manufacturer SJ or earlier.