"Treetopper" wrote in message ...
I understand no auto gas is safe for use in california (AGL) between Sept
and Feb. due to pumping it full of air or some other oxygenating process.
This tends to cause the engine to run extremely lean beyond managmento
levels in flying 2 stroke engines and some 4 stroke engines. Pistons are not
in themselves all that expensive to replace, its the repair to the landing
gear and airframe and hospital bills that kill you.

How about some facts? The oxygenates aren't "pumping things full of air."
It's a specific additive (reformuation) to the fuel. Currently threre are two
popular ones. MBTE and Ethanol. Ethanol is NOT approved for autogas
STC'd aircraft. There are problems with both corrosiveness and interaction
with rubber to solve. MBTE is fine, but it's disappearing because it's a lot
more toxic and due to he absolutely abysmal status of most underground
gas storage tanks, it's a significant pollution risk.