[h=1]EAA Aviation Fuels and Auto Fuel STC Information[/h]
EAA began testing and evaluating alternate fuels for aircraft piston engines in 1964. These included not only automobile gasoline, but also ethanol. In 1982, EAA successfully changed FAA policy to consider the use of automobile gasoline in aircraft. The EAA type certificate program resulted in an FAA Supplemental Type Certificate (STC) being issued for the use of automobile gasoline, rather than aviation gasoline, in the Cessna 150 aircraft, powered by a Continental O-200 engine. The first pilot to legally fly in an aircraft with automobile gasoline was, then FAA Administrator, Lynn Helms. Since then, more than 24,000 STC’s have been issued by the EAA.
Then there is this.......
[h=3]Beware oxygenated fuel in planes burning auto gas[/h] By AOPA ePublishing staff
If you have received a supplemental type certificate (STC) to operate your airplane using auto gas in addition to avgas, you need to be aware of the potential hazards posed by “oxygenated” fuel.
“Usually when fuel is labeled ‘oxygenated,’ it means the gas is blended with ethanol,” explained Craig Brown of AOPA’s Pilot Information Center. Ethanol-blended fuel can damage fuel cells, O-rings, gaskets, and other rubber parts. It can also absorb water, leading to corrosion or forming ice crystals that obstruct the fuel system. Water absorbed by the fuel cannot be detected by sumping the tanks.
Many states now require the blending of ethanol in gasoline, but not all blended auto gas is labeled, so you can’t rely on information provided at the pump. Simple procedures and
test kits are available to test fuel for the presence of ethanol
.
I have burned Auto Gas in both my C-150,and the PA-28 140B for many years... As Engines designed for 80/87 can use 100LL with special precautions. With care ,I found no problems,with Auto Gas!..