10-15-2014, 09:26 PM
I always try to keep above 1800 rpm on grades & drop a gear if that doesn't keep temp below 210 (Now 200 since I just had to overhaul the 8V92. 10-15 extra minutes climbing a hill in 1st gear is WAY better than 3 months & 24K to overhaul again). Once in a while I also was having to drop a gear on very small grade with a REAL bad headwind usually 45 mph or greater. I will run as tight as 2200RPM on ours.