"Matt Barrow" wrote in message
...

"Robert M. Gary" wrote in message
ups.com...
But runnnig your engine at 30" at 15,000 feet is MUCH harder on the
engine than running 30" at 5,000 feet. The engine runs hotter and
harder.

(Where are you getting this information from?)



No, it isn't. MOF, it's probably easier as the air temp is colder and thus
aerodynamic cooling of the engine compartment will be more efficient.


Matt (TN Beech B36)
---------------------
Matthew W. Barrow
Site-Fill Homes, LLC.
Montrose, CO



The lower ambient temperatures don't compensate for the decreased mass flow.
Temperatures rise with altitude. It is a big issue for the preasurized
piston planes flying over FL250.

Mike
MU-2