wrote in message
oups.com...
That's fine for new production & some retrofits, but what about all the
Navajos/Twin Cessnas/Barons/etc. where re-engining would cost more than
the aircraft?


They become worthless. The problem isn't just octane it is also vapor
pressure. The octane problem can be solved but there doesn't seem to be an
economical solution to the vapor pressure problem. The pressurized piston
twins are probably toast if TEL becomes unavailible.

Mike
MU-2