Originally Posted By: FranklinJL
Went ahead and changed the oil over to Castrol 10w60...motor sure is quiet. Seems like my car club buddies that run mostly M3s,M5s S4s, and a few turbo 911's all use 10w60 on the track....we'll see how it performs
Redline 15w50 would have been my choice. The 10w60 will probably shear down to a 50 during the track day anyway.
Is this your first track day ever? If so, fresh, high temperature brake fluid is important. I've been using Motul RBF600 for 15 years or so, and have never had a problem with fluid boiling. Even when running in ambient temperatures up to 107F.