Quote:
Originally Posted by jamesqf
The reason some people objected to low/no lead avgas (other than unthinking anti-environmentalism) was the few very high compression engines that require 100 to 130 octane.
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Back here in Brazil some folks have been converting piston-engined planes to ethanol, and Embraer even manufactures a dedicated-ethanol agricultural plane. Regarding some lack of lubricity, it's always possible to blend some castor oil (or eventually some synthetic 2-stroke oil instead) to overcome it.