use MOGAS. I think many have transferred this "approval" to CAR or AUTO
GAS the blending of auto fuels has changed over the years. Un-leaded
fuels use all kinds of additives to boost the octane rating up that the
lead used to do. Alcohol & even some types of paint solvents and
thinners can be found in the blends. Some are not friendly to products
we use in aircraft fuel systems. Some engines need the lead to
lubricate the valve faces and seats.
My comment is not one of a high degree of research, but if you want to
use alternate fuels, you may want to see what the engine makers and
airframe designers think is acceptable before putting the stuff in your
tank. I still fly mostly high compression 540's & 360's and have not
dared to try the alternates.
So a 747 recently flew a long leg on a blend of bio-diesel. Changes are
coming!
Dick SR-108
-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
Ken
Sent: Friday, February 29, 2008 5:31 PM
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] COPA cover
Yes. Corrosion, rubber deterioration, burnt valves, and sudden failure
due to phase separation. Look at the EAA articles and such.
Alcohol can be removed by the same process that we use to test for it
but I'd suggest that it is not practical.
Even with an automotive fuel system I still test every batch of gas for
alcohol and it does not go in the plane or any of my small engines if it
has booze in it. My engine will still quit if the alcohol separates and
I've had huge problems with separation in small carbuerated engines in
cool weather.
Coming through the Northern States last summer, several service stations
advertised "non-oxygenated" premium fuel for older vehicles, farm
vehicles, etc. That would be without alcohol.
In Ontario here so far I've not seen booze in premium fuel. There is no
requirement to label gas that contains booze here in Ontario but some
stations put the label on regardless of whether or not there is alcohol
in it. Booze also leans out the engine but that is the least of my
concerns. Mind you, the current alcohol level in regular grade gas near
Toronto leans out my little Saturn car so far that it will throw a fault
code for missing if idled more than about a minute when cold. It was OK
at 5% but not at our currently mandated 10+ %. Interestingly I recently
browsed a 2007 Toyota manual that specifies 5% max.
If pure gas is not available I'd recommend avgas and a lead scavenging
additive.
Ken
flyexp@bellsouth.net wrote:
93 octane auto fuel (normally BP brand).I am flying a Rebel with a Lycoming O-235 L2C engine, and I am burning
I am noticing more and more auto fuel pumps stating that they contain
10% ethanol.
Is this enough ethanol to do any harm to my engine, fuel system or
wing tanks?
Also, is there a procedure for removing the ethanol from the gasoline
once it is in solution in the gas. Any response will be appreciated.
Safe flying,
Scott
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