Paul Lamar wrote:

I keep forgetting to mention that the rotary runs fine
on auto fuel which is 75% of the cost of 100 LL while
late model air cooled aircraft engines require 100LL.
My new Cont. O-470 is a good example. 10:1 compression 100 LL
only. This make a P-port rotary engine clearly superior to any
200 to 250 HP aircraft engine in terms of fuel cost
and power to weight ratio despite the 5% fuel burn
penalty.

Oh, it gets better, Paul. MTBE is being phased out, which means that it
will be hard to find ethanol-free oxygenated gasoline. Since *all* STCs
for auto-fuel capable aviation engines require ethanol-free gasoline,
then those lucky few pilots with STC'ed auto-fuel capable planes will
either have to go back to avgas (because all auto fuel in the area is
oxygenated with ethanol) or have to use premium auto gas (some states
are exempting premium gas from ethanol oxygenation rules).

Russell Kent

Sounds like it's about time FBO's start ordering mass quantities
of 82UL. This stuff was supposed to be very easy to make by any
gasoline manufacturer, yet several years after it's introduction
it has yet to show up anywhere.

I would gladly buy it because I can't burn 100LL. Mogas is very
difficult to find at airports. The only airport in northern CA
that has it is Modesto.

Perry [Mick]




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