Quote:
Originally Posted by Al Schober
Are you sure about airport gas? I thought it was just E-zero - no alcohol. didn't think they still had lead in it.
Used to know Methyl and Ethyl well - the Ketone sisters.
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Avgas most definitely has lead in it. Besides for being 100 octane it is formulated on the assumption it will be sitting around a while before being burned.
Airports USED to have 2 grades, 80 and 100. The 80 octane that had little lead or maybe none. That got discontinued and now 100LL is all there is. "Low Lead" is only in contrast to the old 100/130 or 115/145 octane fuel, it has a LOT of lead in it.
This really sucks for low compression airplanes designed to run on 80 octane.For a while we could run car gas, but then ethanol killed that off and now we have to use 100LL and then add TCP to the gas to prevent lead fouling of spark plugs and sticky valves. TCP is quite toxic, I am always careful handing it.
So the moral of the story is I have to use one toxic chemical to fight the effects of another one because someone had the bright idea to subsidize Big Ag and require corn in gasoline
