What Race Oil do you trust?

[Dave Noll]

Originally Posted by Bobby Fazio

Reviving this thread to ask if anyone has given thought to Viscosity Index? As I understand it, the higher the VI number, the less the oil changes with temperature. In trying to be as consistent as possible in our classes- cold morning runs vs a hot laps, would it make the most sense to run oil with a high VI? I've noticed Royal Purple, Eneos, and Driven have high VI numbers.

I would also extend this question to ATF and Differential as well.

Bobby, that is how I understand VI to work. Haven't made a list though of what I want to try next and balance it with a high zinc race oil as well as ATF or diff. Currently Redline in engine and Diff.,