I'm sure this has been asked before but here we go again! We have a Series 60 and are about to embark "over the hump." Previously in a 40' Prevost I overheated and was told at the time my RPM's were too low.
When consulting a friend wih a 45' Series 60 he suggested gearing to run at 2000 RPM's to avoid problems.
Any experienced high altitude guru's out there??