4. MULTIPLE PERFORMANCE LEVELS
Oils designed for diesel engine service might also meet gasoline
engine service. For these oils the designation is “C” category first
followed by the “S” category. “C” category oils have been
formulated primarily for diesel engines and may not provide all
of the performance requirements consistent with vehicle
manufacturers’ recommendations for gasoline-fueled engines.

still doesnt mean it was made for gas engines, just means it will work.

but anyways, all I meant by the whole thing was it has more zinc in it compared to gas-only oils.

 

......and in post #40 I did not quote u, just making a general post to the thread.....

 

Anybody have anything to say about chevron delo i think its called? I heard it one of the few oils with zinc still in it. And would zinc in the oil really mess up the cat?

 

Just use Mobil 1 10W30 and a WIX filter in a Jeep gas burner and quit worrying, everyone.