Joe Gibbs XP-7

[shawburn]

Engine builder recommended running XP-7 in Wissota spec on alcohol. I am used to running Brad Penn 20w-50. Anyone have experience with the XP-7 which is a 10w-40? Thanks.

[keeks]

The XP7 is definitely going to be more expensive. It may be better in the early and late season when it's cooler.

[Krooser]

Tight clearances need a thinner oil... both Gibbs And BP are good...