What Race Oil do you trust?

[curtis reed]

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.

Do you monitor oil temperature? Use an oil heater? If you don't know what temp you are racing at it's hard to center on whether the oil is what is could be causing an ET difference.