API SM Class

In this section: 11 articles
  1. API SM Class
  2. API SL Class
  3. API SJ Class
  4. API SH Class
  5. API SG Class
  6. API SF Class
  7. API SE Class: Petrol Engines from 1972
  8. API SD Class
  9. API SC Class
  10. API SB Class
  11. API SA Class: Petrol and Diesel Engines

The class was approved on November 30, 2004.

Engine oils for modern petrol (multi-valve, turbocharged) engines. Compared with the SL class, engine oils that meet API SM requirements must provide better protection against oxidation and premature wear of engine parts. In addition, the standards for oil properties at low temperatures have been raised. Engine oils of this class can be certified to the ILSAC energy-conserving class.

Engine oils that meet API SL or SM requirements can be used where the vehicle manufacturer recommends the SJ class or an earlier one.

API SM oils

All 37 oils rated API SM

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