nrp wrote:

1) You will only get 95% of the engine's output power compared to pure
gasoline,
2) Your fuel system elastomeric seals, diaphrams, floats etc are not
compatible with any substantial alcohol content,
3) The vapor pressure of the alcohol-laced fuel is higher,
4) The long term storage properties are horrible.

Did I miss any?


Something called "phase separation." At altitude, the gasoline and alcohol do
not remain mixed. To quote the EAA page, "Phase separation is the last reason,
which happens when the fuel is cooled as a result of the aircraft’s climbing to
higher altitude. When the alcohol separates from the gasoline, it may carry
water that has been held in solution and that cannot be handled by the sediment
bowl."

George Patterson
Why do men's hearts beat faster, knees get weak, throats become dry,
and they think irrationally when a woman wears leather clothing?
Because she smells like a new truck.