Differences in Racing oil vs Street Oil ...a must read

"Lake Speed Jr."?
I wonder.......

What's the best oil is always a hot topic on car forums.
We had a long thread I followed some time ago.
I remember someone named "twoshelbies" or something like that had a lot to say.
Wonder what happend to him. Maybe that MIA thread could find out.
Anyway my take away is that the most important thing to know is the zinc isn't in the oils anymore. And flat tappets need it. LIke is pointed out in the link.
I always put STP in since I think it has it.
And I run Mobile One.