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Old 11-21-2016, 05:45 AM
Y22C Y22C is offline
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Quote:
Originally Posted by DanEC View Post
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.
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

Last edited by Y22C; 11-21-2016 at 05:51 AM..
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