"5" SERVICE - (Service Stations, Garages, New Car Dealers etc.)
The following descriptions of the categories in the API Engine Service Classification Systems are intended as guides to aid in the selection of proper engine oils for significantly different engine service conditions. The performance requirements for these categories are technically described in SAE J183-June 1991, Engine Oil Performance and Engine Service Classification (except for SH).

SM -
For all automotive engines currently in use.
Introduced November 30,2004, SM oils are designed to provide improved oxidation resistance, improved deposit protection, better wear protection, and better low-temparature performance overthe life ofthe oil. Some SM oils may also meetthe latest ILSAC specification and/or qualify as Energy Conserving.

SL -
For all automotive engines in use.
Introduced in July 2001. SL oils are designed to provide better high temperature deposit controls and lower oil consumption. Some of these oils may also meet the latest ILSAC specification and lor qualify as Energy conserving.

SJ -
For 1997 Gasoline Engine Warranty Maintenance Service.
API Service Category S J was adopted for use in describing engine oils available in 1996. These oils are for use in service typical of gasoline engines in cur rent and earlier passenger-car, sport utility vehicle, van, and light truck operations under vehicle manufacturers' recommended maintenance procedures.

Engine oils that meet API Service Category SJ designation may be used where API Service Category SH and earlier Categories have been recommended. Engine oils that meet the API Service Category SJ designation have been tested in accordance with the CMA Code, may use the API Base Oil Inter-changeability Guidelines and the API Guidelines for SAE Viscosity Grade Engine Testing. Engine oils that meet these requirements may display API Service Category SJ in the upper portion of the API Service Symbol.

SH -
For 1992 Gasoline Engine Warranty Maintenance Service.
Category SH covers the performance requirements of SG oils tested to the latest CMA protocol on engine testing. In addition, SH oils must meet various bench test requirements including volatility, filterability and foaming tests.

SG -
For 1989 Gasoline Engine Warranty Maintenance Service.
Service typical of gasoline engine in passenger cars, vans and light trucks beginning with the 1989 model year operating under manufacturers' recommended maintenance procedures. Category SG quality oils include the performance properties of API service category CC. (Certain manufacturers of gasoline engines require oils 207 also meeting API Category CD). Oils developed for this service provide improved control of engine deposits, oil oxidation and engine wear relative to oils developed for previous categories. These oils also provide protection against rust and corrosion. Oils meeting API Service Category SG may be used where API Service Categories SF, SF/CC, SE orSE/CC are recommended.

Oils meeting the performance requirements measured in the following gasoline and diesel engine tests:

• The 110 gasoline engine test has been correlated with vehicles used in short-trip service prior to 1978,
  particularly with regard to rusting.
• The iie gasoline engine test has been correlated with vehicles used in high-temperature service prior to 1988,
  particularly with regard to oil thickening and value train wear.
• The VE gasoline engine test has been correlated with vehicles used in stop-and-go service prior to 1988,
  particularly with regard to sludge and valve train wear.
• The L-38 gasoline engine test requirement provides a measurement of copper-lead bearing weight loss and piston varnish under high temperature operating conditions.
• The 1-H2 diesel engine test requirement provides a measurement of high-temperature deposits.
  SF For 1980 Gasoline Engine Warranty Maintenance Service.
  
  Service typical of gasoline engines in passenger cars and some trucks beginning with the 1980 model year operating under manufacturers' recommended maintenance procedures. Oils developed for this service provide increased oxidation stability and improved anti-wear performance relative to oils, which meet the minimum requirements for API Service Category SE. The oils also provide protection against engine deposits, rust and corrosion. Oils meeting API Service Classification SF may be used where API Service Categories SE, SD or SC are recommended. Oils Meeting the performance requirements measured in the following gasoline engine tests: The liD gasoline engine test has been correlated with vehicles used in short-trip service prior to 1978, particularly with regard to rusting. The MID gasoline engine test has been correlated with vehicles used in high temperature service prior to 1978, particularly with regard to oil thickening and valve train wear. The V-D gasoline engine test has been correlated with vehicles used in stop-and-go-service prior to 1978, particularly with regard to varnish, sludge and value train wear. The L-38 gasoline engine test equipment provides a measurement of copper-lead bearing weight loss under high temperature operating conditions.

SE -
For 1972 Gasoline Engine Warranty Service.
Service typical of gasoline engines in passenger cars and some trucks beginning with 1972 and certain 1971 models operating under engine manufacturers' warranties. Oils designed for this service provide more protection against oil oxidation, high temperature engine deposits, rust and corrosion in gasoline engines than oils which are satisfactory for API Engine Service Categories SD or SC and may be used when either of these classifications is recommended.

SD -
For Gasoline Engine Warranty Maintenance Service.
Service typical of gasoline engines in 1968 through 1970 models of passenger cars and some trucks operating under engine manufacturers' warranties in effect during those model years. Also may apply to certain 1971 and/or later models as specified (or recommended) in the owners' manuals. Oils designed for this service provide more protection against high and low temperature engine deposits, wear, rust and corrosion in gasoline engines than oils which 206 are satisfactory for API Engine Service Category SC and may be used when API Engine Service Category SC is recommended.

SC -
For 1964 Gasoline Engine Warranty Maintenance Service.
Service typical of gasoline engines in 1964 through 1967 models of passenger cars and some trucks operating under engine manufacturers' warranties in effect during those model years. Oils designed for this service provide control of high and low temperature deposits, wear rust and corrosion in gasoline engines.