If you had to do a bit of crystal ball gazing, what do you think the
engines
of the GA fleet will be drinking in 10-15 years time?

The same avgas as today, just much more expensive?

Jet-A in diesel engines?

Something else?


When the alternative fuel discussion, and the automotive fuel STC, first
gained popularity; I read that 100LL AvGas was about 96 octane without the
lead.

That would suggest an obvoius solution of 96 octane for most of the fleet,
and blend-at-the-pump (or from the truck) for those that actually make use
of the higher octane fuel. OTOH, that makes too much sense...

Peter