New Quaker State Oil w/ Zinc

ou812 said

Really ANY performance engine should use a racing type oil with plenty of zddp or similar additive package. With strokers you have alot of thrust on the cylinder walls and good oil will prevent any scuffing or premature wear from happening.
I agree with TD, roller or not your quality components NEED quality oil with plenty of scuff additive!!
Brian

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I now believe full synthetic will harm an old engine that needs High viscosity.
Mobile 1 is way too thin for a muscle car.
It's pretty good for a new car. Remember we do not need racing off for the street they don't have detergent or much of any. And if you go full synthetic racing all you're really going backwards. I would imagine these Blends are okay but I've got to know it's thick enough.