"Introduction This material was prepared by the Lubricants Sub-committee of the Products Committee of the American Petroleum Institute to assist manufacturers and users of automotive equipment in the selection of transmission@ transaxle@ and axle lubricants for the operating conditions described. In some axles@ some transmissions and some trans axles@ gears of different designs are available for a variety of service conditions. Selection of a lubricant for specific applications involves careful consideration of the operating conditions and the chemical and physical characteristics of the lubricant. The American Petroleum Institute has released six lubricant service designations for automotive manual transmissions@ transaxles@ and axles. Each designation refers to the performance required of a gear lubricant for a specific type of automotive service. These designations also recognize the possibility that lubricants may be developed for more than one service classification and may be so designated. In developing the language for the service classification@ a need was recognized to supplement the descriptions for certain gear lubricants@ particularly those for hypoid gears@ by referring to a series of tests that would serve as a ""test language"" to provide more detailed information on the performance requirements of such lubricants. The ""test language"" was developed by Section B.3 of Subcommittee B on Automotive Lubricants of American Society for Testing and Materials (ASTM) Committee d-2@ and reference is made to these test procedures in the API service designations described below. The following designations replace all previous API gear lubricant designations;"
API PUBL 1560-1989 history
1995API PUBL 1560-1995 Lubricant Service Designations for Automotive Manual Transmissions@ Manual Transaxles@ and Axles
1989API PUBL 1560-1989 Lubricant Service Designations for Automotive Manual Transmissions@ Manual Transaxles@ and Axles (SIXTH EDITION)
1981API PUBL 1560-1981 Lubricant Service Designations for Automotive Manual Transmissions and Axles (Fifth Edition)
1976API PUBL 1560-1976 LUBRICANT SERVICE DESIGNATIONS FOR AUTOMOTIVE MANUAL TRANSMISSIONS AND AXLES (FOURTH EDITION)
1972API PUBL 1560-1972 Lubricant Service Designations for Automotive Manual Transmissions and Axles (Third Edition)
1969API PUBL 1560-1969 LUBRICANT SERVICE DESIGNATIONS FOR AUTOMOTIVE MANUAL TRANSMISSIONS AND AXLES (Second Edition)
1966API PUBL 1560-1966 Lubricant Service Designations for Automotive Manual Transmissions and Axles (First Edition)