A problem for certificated aircraft flyers now is that most mogas now

contains 10% ethanol. In Oregon it was previously only in the winter in
metro areas, but now it's the whole state year round. Mogas STC flyers
cannot use mogas with ethanol. On my experimental with automotive engine
this is not a problem.
Probably about 1/3 of the approx. 6000 gallons of mogas that has been
burned in my aircraft has contained 10% ethanol, with no ill effects.

Perry
http://mickaircraft.com/duckt.htm

Perry/Paul--we worked through the Oregon Department of Aviation to get the
law changed since last year's ethanol mandate.  As a result,  the new
amended law in Oregon law allows non-ethanol auto fuel to be provided for
aircraft in Oregon.  The legislation doing this was amended House Bill 1079
in early 2008.  I believe the first Oregon airport field to provide that at
the pump subsequent to the law change is Lebanon airport.  Dan Clem, the new
Department Director at the ODA did a great job on this.  It now allows auto
fuel distributors to supply the unblended (non-ethanol) for aircraft.

Steve Beckham


Steve,
I am polishing a white-paper on so-called "alternative" GA fuels and the
engines that can use them.  The presence of ethanol in mogas in the US is
a major issue for engines certified to use mogas.  My point is that ethanol
is blended into gasoline at the level of regional distribution depots, i.e.
that it is possible for a FBO to buy a truck load of UNBLENDED mogas. If I
read your message correctly, that is what's happening in Oregon.  Can you
please confirm that it is indeed the case.
Thank you,
Francois



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