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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.
- Latest Oil Classifications
The American Petroleum Institute (API) is the only national...
- Latest Oil Categories
The American Petroleum Institute (API) is the only national...
- Documents
Publication 1520, Directory of Licensees: API Engine Oil...
- Motor Oil Guide
This six-page laminated guide is designed to help consumers...
- Latest Oil Classifications
API Service Category CK-4 describes oils for use in high-speed four-stroke cycle diesel engines designed to meet 2017 model year on-highway and Tier 4 non-road exhaust emission standards as well as for previous model year diesel engines.
This six-page laminated guide is designed to help consumers understand the API Engine Oil Quality Marks—the API Certification Mark "Starburst," the API Certification Mark "Shield" and the API Service Symbol "Donut"—and the API Service Categories.
category oils have been formulated primarily for diesel engines and may not provide all of the performance requirements consistent with vehicle manufacturers’ recommendations for gasoline-fueled engines.
API Certification Mark: An oil displaying this mark meets the current engine protection standard and fuel economy requirements of the International Lubricant Standardization and Approval Committee (ILSAC), a joint effort of U.S. and Japanese automobile manufacturers.
Use only the recommended API category: “S” for gasoline en-gines; “C” for diesel engines. Select the proper SAE oil viscosity grade. If you find it necessary to mix brands of oil, use the same viscosity grade and API service category to maintain performance. Properly dispose of used oil.
Oils with specifications from SA to SH are typically suitable for engines manufactured before 1995. However, it's important to note that higher specification oils can be used in place of lower ones. For example, an oil with specification SP can be used for engines requiring API SN, SM, SL, and SJ.
