Skip to main content

Latest Oil Classifications

SN PLUS

On November 9, 2017, the API Lubricants Standards Group approved the adoption of SN PLUS, a new classification that may be used in conjunction with API SN and API SN with Resource Conserving. The user language and requirements for the new classification may be downloaded  from the EOLCS documents section.


API began licensing oils against the SN PLUS classification on May 1, 2018. As marketers consider developing oils that comply with the SN PLUS classification, they should keep the following points in mind:

  • Marketers may identify oils that meet all of the requirements of the standards as meeting API SN with SN PLUS or API SN with SN PLUS and Resource Conserving but may not state or imply API certification or licensing of SN PLUS without first being licensed for SN PLUS by API.
  • Marketers that want API to license their oils as meeting API SN with SN PLUS and API SN with SN PLUS and Resource Conserving must apply for licensing through the on-line application system at my.api.org.
  • Licensed API SN with SN PLUS and API SN with SN PLUS and Resource Conserving oils will appear in the online API Directory of Licensees.
  • Marketers with licensed SN PLUS oils may use SN PLUS in the lower half of the API Donut.
  • Oils licensed by API as API SN with SN PLUS and Resource Conserving and ILSAC GF-5 are eligible to display the API Certification Mark Starburst.