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Old June 13th 08, 06:42 AM posted to rec.aviation.owning
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Default Lycoming to approve 93 octane auto gas for O-360 & IO-360

On Jun 12, 12:13*pm, "JGalban via AviationKB.com" u32749@uwe wrote:
wrote:
All
it really means is that 93 octane (88 aviation rating) auto gas that
doesn't have ethanol or something else in it is OK.


* *Doesn't have ethanol? *I don't think so. *I read the spec and it has
provisions for oxygenates (ethanol by default). *Lyc. doesn't care if you
burn ethanol in the engine. *It's the plane's fuel system (tanks, hoses,
seals, etc...) that are most likely to have problems with it. *Lyc. is not
applying for airframe approvals, so that's not their problem.

* *I'm curious where you got the 88 aviation octane number. * If that is
accurate, O-360s and IO-360s will likely be blowing holes in the tops of
their pistons on hot days.

John Galban=====N4BQ (PA28-180)

--
Message posted viahttp://www.aviationkb.com


I got the octane info from a member of the Cardinal flyers group that
owns a turbo Cardinal. He works for Chevron and is very knowledgeable
about petroleum products. He has a digest column where he answers
questions from members about their planes.

Regards,
Bud