C Camprunner Joined Feb 19, 2008 Messages 1,065 Location MA. Apr 10, 2017 #1 When the change was made to SN rated motor oil I think before that it was SM? Did SN rated oil have to meet any better cleaning standard then the previous oil rating?
When the change was made to SN rated motor oil I think before that it was SM? Did SN rated oil have to meet any better cleaning standard then the previous oil rating?
J JeepWJ19 Joined Sep 9, 2015 Messages 1,064 Apr 10, 2017 #2 previous posted topic of SM vs SN Last edited: Apr 10, 2017
