New Quaker State Oil w/ Zinc

Gator said
Quaker State? No way !!! Have you ever seen the inside of an engine that ran Quaker State? Not pretty... For me it is Pennzoil 10w-40 with a can of STP which contains ZZDP at every oil change. Been running this combo for yearssss in my current HiPo 340 and never have had no issues.

I've heard the exact opposite by a famous Pontiac engine builder Nunzi Romano Brooklyn NY.
He built the engine in my '74 Trans Am 455 SD in the mid 80s. These are kind of loose he told me to use Quaker State 20-50 I said why that brand. He said he's never seen a motor come apart that used its whole life that was dirty on the inside. He also said do not use racing oil for the street and I now know why.
It does not have detergent if any at all. We've got to have the old stuff my friend talked me into putting Valvoline VR1 in there 20-50 in it. It didn't go a couple of weeks before it was dirty again and I was wondering why it was so damn thin it's full synthetic. I've got to get that crap out of there quick.
We're having trouble getting the all we want and they've changed it on us. The old Quaker was Pennsylvania crude which was green and thick and that's what I need. Full synthetics good if you got a new style engine with tight clearances it's the exact opposite what we need for a muscle cars. I saw Walmart had Quaker 20-50 conventional called all mileage. And I'm thinking most all conventional analysis at least a synthetic blend I may be okay with it I may not. I want a real conventional viscosity 20-50 with detergent and if it does not have zinc I'll get some. I wish my motor Builder was still around to talk to him he's retired.
But I realized pretty quick that Valvoline racing all is a 500 Mi oil for racing Way Too Thin and gets Way Dirty way too fast. I'm thinking about getting the Penn1. I know what's the green Pennsylvania crude but it's also recycled which most oil is now.
I'm also looking at the GTX trying to figure out if it's true 20-50 viscosity I think most are trying to hood wink us.