Thanks Bill, The two articles you hyperlinked contain a wealth of
information. The article by the 76 writer seems pretty conclusive.
I've checked my laptimes using 110 race gas and AVgas with no obvious
Thanks for the input. Now I'm really confused !
----- Original Message -----
To: <firstname.lastname@example.org>; <email@example.com>
Sent: Monday, May 14, 2001 9:54 AM
Subject: Re: Aviation Gas
> Don: I was using aviation gas in my Bristol engine with 10.8:1 until I
> someplace that although it had a high octane rating, it was short on
> content. I since found that the Bristol runs OK on premium gas. Then I
> look at http://www.osbornauto.com/race2avgas.htm Racing Gasoline Versus
> Aviation Gasoline by Tim Wusz, 76 Products Co. and
> http://www.faqs.org/faqs/autos/gasoline-faq/part3/. I think the former has
> ax to grind. My interpetation is that avgas is good if you need the octane
> but it may be necessary to richen the mixture. But you can draw your own
> conclusions. The guys in England & New Zealand seem to use avgas
> as far as I can tell.
> Regards, Bill Watkins