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This SAE Standard outlines the engine oil performance categories and classifications developed through the efforts of the Alliance of Automobile Manufacturers (Alliance), American Petroleum Institute (API), the American Society for Testing and Materials (ASTM), the Engine Manufacturers Association (EMA), the International Lubricant Specification Advisory Committee (ILSAC), and SAE. The verbal descriptions by API and ASTM, along with prescribed test methods and limits, are shown for active categories in Table 1 and obsolete categories in Table A1. Appendix A is thus a historical documentation of the obsolete categories.

This SAE Standard describes lubricating oils meeting the physical, chemical and performance requirements of American Petroleum Institute (API) performance categories CF and CF-2, CI-4, supplement CI-4 PLUS, and SAE J300. These oils are suitable for the lubrication of wheeled vehicles with compression-ignition (diesel) engines. This document supersedes the military’s Commercial Item Description (CID) A-A-52306.

This SAE Standard describes lubricating oils meeting the physical, chemical, and performance requirements of the American Petroluem Institute (API) SM category and the International Lubricant Standardization and Approval Committee (ILSAC) GF-4 standard. These oils are suitable for the lubrication of spark-ignition engines (gasoline engines). This document supersedes the military’s Commercial Item Description (CID) A-A-52039.

This SAE Standard describes lubricating oils meeting the API SJ performance category, SAE J300, the International Lubricant Standardization and Approval Committee (ILSAC) GF-2 Standard, and bear the API Certification Mark (starburst symbol) in accordance with API 1509. These oils are suitable for the lubrication of spark-ignition engines (gasoline engines). This document is equivalent to the military’s Commercial Item Description A-A-52039 when all requirements are met.

This SAE Standard describes lubricating oils meeting the API performance categories CF, CF-2, and CG-4, and the SAE J300. These oils are suitable for the lubrication of wheeled vehicles with compression-ignition (diesel) engines. This document is equivalent to the military’s Commercial Item Description A-A-52306 when all requirements are met.