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<< Lancair Builders' Mail List >>
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Marc Verdi writes
<<However, I think I am
either flying blind, stupid, or both in believing (based on my personal
experience) that Mogas is a suitable substitute to Avgas. It works for me.>>
I think I must not have been clear. MoGas bought at your local FBO IS
suitable to run in your airplane IF your engine is approved for it. My point
was that MoGas (fuel you buy at an FBO) is NOT Autogas (fuel you buy at a
gas station) and IF you are burning Autogas from the local gas station in
your airplane, THEN, you are asking for trouble. The reason MoGas is not
Autogas has nothing to do with chemistry and lots to do with the
distribution infrastructure.
I read a report from the mid 80's where an independent analytical company
sampled 89 octane fuel at about 2 dozen retail gas stations in the LA basin
on the same day. The samples were analyzed and and the results were that the
octane of the fuel varied by 6 points and only one of the samples met the
advertised rating! After reading this report I was struck by the thought
that when you use one of those automated pumps to fill up your car and you
select the fuel type, what you really are doing is selecting the price you
are paying and the pump is just connected to one big tank <g>. Reminds you
of Zeppo in the back room of the speak-easy "One quart a Scotch, one quart a
Rye".
There is lots of scientific proof and anecdotal data that automobile fuel
can be used in certain aircraft engines with no or little deleterious
effects. This may lead some to conclude that you can use fuel purchased at
an automobile fuel reseller in your airplane. You can, but it is not a good
idea as there are no controls, other than volume, on what you are buying.
Would a multi-billion dollar oil company knowingly sell me regular at
premium prices? Probably not (in any fashion that could be proved in court).
Is it possible that one of the many hands in the distribution chain happens
to belong to a guy with a big head and a banjo who needs to make rent that
month and decides a little regular in the premium "wont hurt none"? Well,
let me think....
Caveat emptor.
Regards
Brent Regan
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Please send your photos and drawings to marvkaye@olsusa.com.
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