[marvgarr68]

Originally Posted by Ricks1971

Rotella and the others have high zddp 1,200 parts per million and recommended level for hot rods with flat tappet cams is 1,100 parts per million. The Valvoline VR1 is 1,400 parts per million and can be used in non cat cars and trucks.

I have used the vr1 oil and I do like it but expensive I only use when I need the heavy weight as they make in 50wt and 60 wt