I'm not sure that's true.  Here in AZ I have bought gas at 7500' and it is still 87 octane for
regular, while in NM, right next door, it is 86 octane for regular, and this is true at a vide
variety of elevations in both states.

Bill

----- Original Message -----
From: "Dave Baker" <DBAKER5@KC.RR.COM>
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>
> ----- Original Message -----
> From: Kim Brennan <KimBrennan@AOL.COM>
\> >
> > I do have one peeve. What's with the garbage gas in Colorado? "Regular" is
> 85 octane. Plus is what I consider normal for regular at 87 octace. Super is
> 91, mostly (if available). Get me back to a civililzed state and decent gas!
>
> I think the lower octane rating relates to the higher elevations.
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