What would you do if your auto fueled airplane was at an airport without
access to auto fuel?


Engines designed (or modified) to run on 87 octane auto fuel run on
100LL, with proper leaning. They can have a tendency to foul plugs if
proper care is not taken, however. Mogas STCs allow mixing of aviation
fuel with mogas, in any ratio. The main caveat is alcohol in the gas,
which is a no-no.

You know how some people with cars put hi octane in, thinking it is going to
get them better performance? Waste of money, since no more power is
produced, without re-tuning the engine, but no problem.

Same with the airplane, going to the 100 octane. Problem is the Lead in the
100(L)ow (L)ead

There is a problem at times, with the lead buidup on valves. Usually not a
problem, if done on occasion. I you have to burn 100 LL, and want to be
perfectly safe, you can buy some stuff that will scavenge the lead out, but
it is pricey.
--
Jim in NC