Hey all-

I think the 'dividing' line for 85 Octane in CO (or anywhere) is 5,000'.

John Brush wrote:

> >
> > >>In Texas and New Mexico ALL of the regular gas
> > >>was 86 octane.  Anyone know why this is so?
> >
> > Regular is 86 here in Colorado.  I've been told that
> > the refiners lower it because of the altitude.  I have
> > noticed 87 at lower altitude places....
>
> In SLC Ut, regular is 85 octane.
>
> Higher altitudes can use the lower octane. If you go to a higher
> altitude, with what looks like a lower octane rating, its okay to use
> it, don't waste you money putting in the middle grade. I dunno about
> anyplace else, but that applies in the states.
>
> Regards from Utah
>
> John