Can alchohol, methanol and ethanol be used?
Do not use fuel which contains methanol or ethanol. They are not compatible with materials in your fuel system and will cause malfunction of the fuel delivery system. There is a simple test to determine significant alcohol content in fuel. EAA Field Information No. 306 provides details on how to do it yourself. The FAA has tested Methyl Tertiary Butyl Ether (MTBE) and found no harmful effects in aircraft engines and typical fuel systems at various concentrations up to 100 percent MTBE. (Reference: Report DOT/FAA/CT88/05 “Alternate fuels for General Aviation Aircraft with Spark Ignition Engines.”). As of late 1992, FAA clarified the policy allowing the use of MTBE for STC-approved installations. As of December 1995, the FAA has also tested and approved Ethyl Tertiary Butyl Ether (ETBE). See EAA Field Information No. 305.
