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| API | STATUS | USE |
|---|---|---|
| CA | Obsolete | Not suitable for engines manufactured after 1959 |
| CB | Obsolete | Not suitable for motors manufactured after 1961 |
| CC | Obsolete | Not suitable for engines manufactured after 1990 |
| CD | Obsolete | Used for naturally aspirated and turbocharged diesel engines |
| CD-II | Obsolete | Used for 2 stroke diesel engine |
| CE | Obsolete | Used for naturally aspirated and turbocharged diesel engines. Can be used in place of CC and CD oils. |
| CF | Current | Used for field diesel engines, indirect oil injection and other diesel engines using sulfur fuel higher than 0.5% kl. Can be used in lieu of CD oil supply |
| CF-2 | Current | Used for 2-stroke diesel engine with heavy duty. Can be used instead of CD-II oil. |
| CF-4 | Current | Used for naturally aspirated and turbocharged diesel engines. Can be used in place of CD and CE oils. |
| CG-2 | Current | Used for 2-stroke diesel engine with heavy duty. Can be used instead of CD-II oil. |
| CG-4 | Current | Used for naturally aspirated and turbocharged diesel engines, heavy duty diesel fuel with less than 0.5% kl. Can be used in place of CD, CE and CF-4 oils. Meets emissions standards in 1994. |
| CH-4 | Current | Used for naturally aspirated and turbocharged diesel engines, heavy duty diesel fuel with less than 0.5% kl. Can be used in place of CD, CE CF-4 and CG-4 oils. Meets emissions standards in 1998. |
| CI-4 | Current | Used for naturally aspirated and turbocharged diesel engines, heavy duty diesel fuel with less than 0.5% kl. Can be used in place of CD, CE CF-4 CG-4 and CH-4 oil grades. Meet the emission standards in 2004. |
| CJ-4 | Applied from 2007 | Meet 2007 emissions standards. |