Quote:
Originally Posted by abjbrtd
I'm pretty sure the Ford V10 is not a flex-fuel motor! 
Check your owners manual BEFORE filling with E85.
If you've already filled you should use it asap, with frequent stops for a few gallons of E10, E0 if you can find it would be better 
Edit: 85 is not the octane rating  it's the % of ethanol, not good! |
The discussion is regarding the lower OCTANE gas available at higher altitudes, not ethanol content. It's best not to conflate the two.
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