Penn Grade (Brad Penn) oil

I ran 10w30 in my race motor for years, then I was told by BES in Indiana that I should be running 10w40. I'm trying Lucas hot rod oil 10w40 on my current build. It's cheaper than racing oil and has a very high zinc content. It's on about the 4th oil change and so far things are looking good. I'm at least a season away from a refresh, we'll see how things look when I open it up again.