Quote:
Originally Posted by DanEC
I've been using Joe Gibbs HR oil but may switch back to Rotella 10W-40 on at least some of my cars. Rotella is still high in ZDDP.
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Sorry to say, but due to the new diesel emission standards, and the sensitivity of the emissions control systems on diesels to ash, the
zinc levels in Rotella and other diesel oils have been reduced to somewhere in the 900-1000 PPM range.
Ken