Quote:
Originally Posted by Got the Bug
I've been running the Joe Gibbs Racing oil for a while. I traded a couple of emails with Lake Speed Jr. at JGR and decided on a 50/50 blend of HR-1 (15/50) and HR-2 (10/30). |
I did the same thing, traded emails with Joe Gibbs technical staff. Gave the bearing clearances on the alu 427w and they came back with - for break-in use Gibbs BR straight 30wt, then go with the Gibbs HR-3
Synthetic 15W-50.