Originally Posted by FL 4Motion

I don't know the answer to that either, so i guess the take away for me is: change the oil after a track event. But, I'm not going to loose sleep if that oil changes occurs a week or two later (ie. a few hundred miles after the track). After all, most of us drive to the track and then drive back, could be 100's of miles each way sometimes, I doubt too many folks are getting the oil change done prior to going home.

At the end of the day, for me, spending a few $$ for some extra piece of mind is worth it.