API SH

API Service Category SH was first introduced in 1992 for use in gasoline engines and is not suitable for use in engines introduced after 1996.API has discontinued licensing engine oils against API SH and it is considered to be an obsolete specification.Engine...

API SG

API Service Category SG was first introduced in 1989 for use in gasoline engines and is not suitable for use in engines introduced after 1993.API has discontinued licensing engine oils against API SG and it is considered to be an obsolete specification.Engine...

API SF

API Service Category SF was first introduced in 1980 for use in gasoline engines and is not suitable for use in engines introduced after 1988.API has discontinued licensing engine oils against API SF and it is considered to be an obsolete specification.Engine...

API CI-4 Plus

API CI-4 oils that also carry the classification CI-4 PLUS are formulated to provide a higher level of protection against soot-related viscosity increase and viscosity loss due to shear in vehicles powered by diesel engines. As of September 1, 2004, oils that meet the...

API CG-4

API CG-4 was introduced in 1995 for severe duty, high-speed, four-stroke diesel engines used in both on-highway (0.05% wt sulfur fuel) and off-highway (less than 0.5% wt sulfur fuel) applications.API CG-4 oils are required for engines meeting 1994 emission standards....

API CD

API CD was first introduced in 1955 for certain indirect-injection, naturally-aspirated, turbocharged or supercharged diesel engines running on fuels with a wide quality range (including high-sulfur fuels). Oils designed for this service have requirements for...