Tegger wrote:

>
> You can find ethanol-free gas almost everywhere. It's usually in the form
> of the the "premium" octane grades, like 91 pump octane. The lower the
> octane, the higher the ethanol content. But you won't find non-oxygenated
> anywhere in North America now that MMT is out of use.
>
>


You have that one backwards Tegger. Ethanol has a naturally high octane
variously reported at somewhere from 113 to 129 and is used in fuels
in part to increase the final octane rating.

http://www.gov.mb.ca/est/energy/ethanol/ethanolfaq.html

http://en.wikipedia.org/wiki/Octane_rating

In many cases premium fuels actually have a higher ethanol content than
their regular fuel counterparts because adding ethanol is one of the
simple ways to increase octane ratings.

John