
Useful Data
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API ENGINE SERVICES CLASSIFICATIONS C 'Commercial' Classification (primarily for Diesel Engines) |
| CJ-4 | Description Introduced in 2006. For high-speed, four-stroke engines designed to meet 2007 model year on-highway exhaust emission standards. CJ-4 oils are compounded for use in all applications with diesel fuels ranging in sulfur content up to 500 ppm (0.05% by weight). However, use of these oils with greater than 15 ppm (0.0015% by weight) sulfur fuel may impact exhaust aftertreatment system durability and/or oil drain interval. CJ-4 oils are effective at sustaining emission control system durability where particulate filters and other advanced aftertreatment systems are used. Optimum protection is provided for control of catalyst poisoning, particulate filter blocking, engine wear, piston deposits, low- and high-temperature stability, soot handling properties, oxidative thickening, foaming, and viscosity loss due to shear. API CJ-4 oils exceed the performance criteria of API CI-4 with CI-4 PLUS, CI-4, CH-4, CG-4 and CF-4 and can effectively lubricate engines calling for those API Service Categories. When using CJ-4 oil with higher than 15 ppm sulfur fuel, consult the engine manufacturer for service interval. |
| CI-4 | Description Introduced in 2002. For high-speed, four-stroke engines designed to meet 2004 exhaust emission standards implemented in 2002. CI-4 oils are formulated to sustain engine durability where exhaust gas recirculation (EGR) is used and are intended for use with diesel fuels ranging in sulfur content up to 0.5% weight. Can be used in place of CD, CE, CF-4, CG-4, and CH-4 oils. Some CI-4 oils may also qualify for the CI-4 PLUS designation. |
| CH-4 | Description For 1998 Severe Duty Diesel Engine Service. API Service Category CH-4 describes oils for use in high-speed, four-stroke diesel engines designed to meet 1998 exhaust emissions standards as well as for previous model years. CH-4 oils are specifically compounded for use with diesel fuels ranging in sulfur content up to 0.5 percent weight. |
| CG-4 | Description For severe duty diesel engine services. API Service Category CG-4 describes oils for use in high speed four-stroke cycle diesel engines used in both heavy duty on-highway (0.05% wt. sulfur fuel) and off-highway (less than 0.5% wt. sulfur fuel) applications. CG-4 oils provide effective control over high temperature piston deposits, wear, corrosion, foaming, oxidation stability and soot accumulation. These oils are especially effective in engines designed to meet 1994 exhaust emission standards and may also be used in engines requiring API Service Categories CD, CE and CF-4. Oils designated for this service have been in existence since 1994. |
Specifications Caterpillar IN Mack EO-L |
| CF-4 | Description For severe duty high speed four stroke cycle diesel engines. Service typical of turbocharged or supercharged heavy duty diesel engines manufactured since 1990. Particularly suited for on highway, heavy duty truck applications API CF-4 oils exceed the requirements of CE category oils and are designed to replace CE category oils. It may also be used in place of earlier categories CD or CC. API CF-4 is designed to provide improved control of oil consumption and piston deposits. |
Specifications Caterpillar 1K |
| CF-2 | Description For two stroke cycle diesel engine service. Service Category CF-2 denotes service typical of two stroke cycle engines requiring highly effective control over cylinder and ring-face scuffing and deposits. Oils designated for this service have been in existence since 1994 and may also be used when API Engine Service Category CD-II is recommended. These oils do not necessarily meet the requirements of CF or CF-4 unless passing test requirements for these categories. |
Specifications Caterpillar 1 M-PC Detroit Diesel 6V-92TA |
| CF | Description For indirect injected diesel engine service. Service Category CF denotes service typical of indirect injected diesel engines, and other diesel engines which use a broad range of fuel types including those using fuel with higher sulfur content, for example over 0.5% wt. Effective control of piston deposits, wear and copper-containing bearing corrosion is essential for these engines which may be naturally aspirated, turbocharged or supercharged. Oils designated for this service have been in existence since 1994. Oils designated for this service may also be used when API service category CD is recommended. |
Specifications Caterpillar IM-PC |
| CE | Description For Severe Duty Turbocharged Diesel Engines. Service typical of turbocharged or supercharged heavy duty diesel engines manufactured since 1983 and operated under both low speed, high load and high speed, high load conditions. Oil designated for this service may also be used when previous API Engine Service Categories for diesel engines are recommended. |
Specifications MIL-L-2104D/E MIL-L-45199 Mack: EO-K/2 Cummins: NTC 400 |
| CDII | Description For Severe Duty Two Stroke Cycle Diesel Engines. |
Specifications MIL-L2104D Detroit Diesel: 6V-53T MIL-L-2104C/D Mil-L-45199 |
| CD | Description For Severe Duty Diesel Engines. Typically for certain naturally aspirated, turbocharged or supercharged diesel engines where highly effective control of wear and deposits is vital, or when run on fuels of a wide quality range including those with high sulphur content. Oils designated for these conditions were introduced in 1955 and provide protection from bearing corrosion and from high temperature deposits in these diesel engines. |
| CC | Description For Moderate Duty Diesel and Petrol Engines. |
Specifications MIL-L-2104B |
| CB | Description |
Specifications MIL-L-2104A supp. 1 |
| CA | Description |
Specifications MIL-L-2104A |
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