In article ,
Roger Long om wrote:
I was always taught that WOT was a "renter's setting" and that you should
back off to 2300-2400 if you want to get good life out of your engine.

If you want to stick to 75/65/55% power, check the POH table which
relates power to altitude. If you hang back at 2400RPM in a 172 as
you climb, your power is actually going down and down. By about 7000'
you can only get 75% with the throttle all the way in. That will be
a lot higher than 2400 RPM.

--
Ben Jackson

http://www.ben.com/