wrote in message
news:OWiye.14793$mr4.13119@trnddc05...
On 4-Jul-2005, "Matt Barrow" wrote:

Well, vapor lock has nothing to do with the type of fuel you're running.


On 4-Jul-2005, "Matt Barrow" wrote:

While unleaded autogas provides sufficient octane
to substitute for 80/87 avgas in low-compression engines, there are other
differences that can cause problems when using autogas in some engine
installations. The two most significant are lower vapor pressure -- which
can lead to vapor lock -- and incompatibility between some of the
additives in autogas and some components (particularly seals) in some
aircraft fuel
systems.


Hmm.... either there are two Matt Barrows (using the same e-mail address)
or else he is schizophrenic. Judging from some of his political views,
I'd
say the later is a distinct possibility.
--
-Elliott Drucker

I'm keeping out of the politics on this one, except to say that two out of
every one of us could be schizophrenic.
After talking to a Shell Guru at a seminar my understanding is that the
vapour pressure issue with mogas can be of real concern and that mogas is
best used for low altitude work. His other push was the relative quality of
avgas versus mogas - not just in manufacture but in distribution. With what
I find in many of the auto fuel filters I change, I'd have to agree. I have
had about 15 cases from one local servo in the past 8 to 10 weeks. Now
that, in Oz, ethanol is included in much mogas, not to mention the odd
toluene shonk, I would be wary about mogas use for long haul or high
altitude. Also goes without saying that you don't get as far on a litre of
fuel containing ethanol and/or toluene.
Brian