On Jun 23, 10:57*pm, Jack Legg wrote:
http://www.tampabay.com/news/busines...o-it-yourself-...

"Spivey recommends using gasoline with an 89 or 93 octane rating, if you
can afford it. The fuel is slicker, which means it won't hang around on
your engine valves and other internal parts, eating away at the rubber."

Is this true?

http://www.reuk.co.uk/Introduction-to-Ethanol.htm
Other interesting stuff here too.