Just run 5% diesel fuel. (1 gallon diesel to 19 gal. gas) It will boost the octane as well as a lead substitute, and it's a lot less expensive.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!