Hill Climbing
Just want to run this by some of you, at the present time when I climb a (Hill or Mountain) I let the Allison do the changing or down shift as needed, if it don't down shift at 1400 RPM I will down sh...
Forum Discussion
I always bragged that I let the transmission decide on the shifting point when climbing and never had overheating problems. But this year when climbing north of Phoenix on 17 and the outside temperature was 90 degree's the engine heat indicator started climbing towards the upper limit, so rather than risking it going in to limp mode I had to manually shift so I could hold 2200 rpms and the heat stabilized. So I would say let your transmission do the shifting, but keep an eye on the engine temperature.;)
