I'm planning on changing the oil in my street/strip 440 (flat tappet) engine in a few weeks and I'm thinking about going with the Brad Penn 15/40W partial synthetic oil. I've never used any partial synthetic oils (previously have used VR1)...anything I should know before making the switch?

"When I'm in a slump, I comfort myself by saying if I believe in dinosaurs, then somewhere, they must be believing in me. And if they believe in me, then I can believe in me." - Mookie Wilson