Quote Originally Posted by chargeR View Post
Red Line 10-30 or 10-40 depending on the season.
Also to help the thread starter here is a little more information:

engine: K20A2
Positives: My motor has not blown yet in around 15 track events in all weather with no oil cooler, and it shows no signs of slowing down. I change my oil every 2 track days or 5000km whichever comes first.

Negatives: Red line is quite expensive.