API 1509 Documents
API 1509 describes the voluntary API Engine Oil Licensing and Certification System (EOLCS) and explains to marketers how different API marks are licensed and displayed for the consumer. The current edition of API 1509 is now available and can be downloaded in pdf format.
Downloads
File Size: 1.6 MB
Current complete edition
API 1509 Addendum 2, 17th Edition, September 2012 (Addendum 1 October 2014)
File Size: .4 MB
API CK-4 and FA-4 Standards
File Size: .5 MB
API CK-4 and FA-4 Service Symbol instructions
File Size: .5 MB
Changes to Annex G tables
File Size: 400 Kb
Resource Conserving requirements for SAE 0W-16 oils
File Size: .6 MB
Addition of Sequence IIIH test to API SN requirements
API SN with SN Plus
File Size: .6 MB
API 1509 Annex F-API Guidelines for SAE Viscosity-Grade Engine Testing (December 2016)
File Size: .6 MB