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
I suppose it depends on your purpose. I've played around some with tuning of my Mustang that has custom tunes. 91 tune is more powerful, but I don't get much of a mpg payoff. So, I generally run the 87 tune.
I agree that the minimum should be what the mfg recommends, but add that if you can buy gasoline outside of the large cities with less ethanol you'll be better off as well.
I agree that the minimum should be what the mfg recommends, but add that if you can buy gasoline outside of the large cities with less ethanol you'll be better off as well.
