Track/Race only cars, what oil are you using
 

reading up a bit on the Corvette forum, and I know they are different types of engines, but its interesting reading, especially the white papers. Also through conversation with Anthony @ LG, I think I'm going to switch to Redline 40W race oil. He told me redline and motul race oils are both ester based.
--Important read-- Engine Oil Tech - Corvette Forum

Unless you plan on changing your oil very frequently (before every race weekend) I suggest you stick to the regular multi-weight Redline.

We usually use Motul 5w40.

Changing oil after each event is more important than brand. As long as you are using high quality synthetic.