Corky Scott wrote:

Do you understand that under leaned conditions and above a certain
altitude, say, 7,000 feet, that you cannot achieve engine redline?
The altitude limits the engine output due to the lowered oxygen
content in the air.

I do... However I live 44' asl and have never been that high in any of
the 5 types I've flown sofar...

WOT cannot harm the engine under this condition because the engine can
only produce around 65% to 60% power at that altitude. You might as
well run WOT or you may be limiting the engine even more.

Typically we're at 2000' or below, but this plane is a recent purchase
and will see more crosscountry time than what we've done previously...