Posted by MoparNorm on Tuesday, October 09, 2007 at 14:30:23 :
In Reply to: Re: REREAD what I posted... posted by Todd Wilson on Tuesday, October 09, 2007 at 13:37:18 :
Yes they are, and the diesel oils are now ULSD compliant, which changed the rating again.
If you know the API rating that you need, you can shop for your oil that way.