[whatsnewell]

Guy, I'm pretty sure both your engine bay doors are louvered, right?  You can adjust those louvers outward to force more outside air into your engine compartment when you are moving.  When I first got my coach the louvers were flush with the door frame, and I did not know they could be adjusted outward.  On a trip to Rincon Parkway in Ventura back in 2009 I saw another Newell Classic which had those louvers adjusted all the way out in the third position.  Before that I did not know they could be adjusted.  Since then I have moved them to the 2nd position where they remain 90% of the time, but when I know we will be traveling long distance in hot weather I move them to the 3rd position.  I'm sure you have the same setup.

   

   

   

Otherwise I do what Richard has suggested, and grab a lower gear when climbing keeping the RPM's near red line, or 2,000 RMP's in the case of a 2 stroke.  I rarely get above 200º F when climbing now.....when climbing a 6% grade my temp is typically running 195-198º F.