Thanks MrJ .... I should have looked that up myself, too busy putting miles on the old gal right now (weak excuse). Although the way I read that is not to use less than 87 in higher altitude areas, not a total ban on using less than 87 octane.
Gas is good price in Sturgis tonight
Sturgis Michigan
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Imagine how cheap gas will be when electric cars start rolling out in a couple years
No
The things is 85 & 86 are sold ad regular IN HIGH ALTITUDES (something about atmospheric pressure affecting how stuff runs?)
And imho Ford's just doing CYA lawyer speak for "don't use anything we didn't test and then expect us to cover it with warranty if you mess it up".... it doesn't actually mean anything conclusive
Utah 85 ran good and with quite solid MPGs for a couple of tanks for me