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Oils for older vehicles and new engine break in
Posted to Castrol Forum on 6/5/2017 28 Replies

Does Castrol sell any motor oils in the U.S. that have high zinc and phosphorous for early flat tappet engines?

I heard some diesel spec oils still are produced with high zinc and phosphorous is this true? Can they be used in gasoline engines? Login to read more.

28 Replies Received (View Replies)