January 17, 2018
Volume 2 Issue 11
SN Plus Date Still Up in the Air
The American Petroleum Institute’s Lubricants Standards Group formally adopted API SN Plus last week but still has not set a date for first licensing. The group – along with automakers – would like that date to be May 1, but a schedule has been held up by testing related to base oil interchange and read-across rules for one of the tests in the supplemental oil category.