I sometimes run 91 but usually buy the middle octane just for peace of mind (if that can ever happen, lol).
FWIW, I always treat my fuel with marine stabil , every time, in all my toys including my toy hauler.
Worked well for my boat so it cant hurt.
my .10 cents worth (inflation)
- '08 700 Rhino Midnight Edition
- HID headlights
- UNI air filter
- HCR spindles