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70 YEARS Introduced by API Regular | Premium Heavy Duty ML | MM | MS Obsolete SA | SB | SC/SD Obsolete ML | MM | MS 1952 SE Obsolete SF Obsolete 1972 SG Obsolete 1987 SJ Current 1996 SM Current 2004 1971 1947 1980 SH Obsolete 1992 SL Current 2001 SN Current 2010 Motor Oil Has Mattered For MotorOilMatters.org Copyright 2017 – American Petroleum Institute, all rights reserved. API, the API logo, the Oil Matters logo, the API Certification Mark (Starburst), and the API Service Symbol (Donut) are either trademarks or registered trademarks of API in the United States and/or other countries. API Global Marketing & Creative: 2017-095 | 06.17 | PDF TM
