What gas octane???
Users of the big gassers: Dodge 6.4, GM 6.0, Ford 6.4....... Can the lower octane be used or do you need the higher octanes????? Colorado we have either 85, 87, or I think 91..
Forum Discussion
Mine says 87 too. The higher in altitude you go the easier it is to get away with lower octane gas.
I think using a Top Tier gasoline is important also.
I think using a Top Tier gasoline is important also.
