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...
To me, it depends on the upcoming grades. If it's just one or two hills, I'll let the Allison do its thing. If I know there is a lot of hill climbing in the next several miles, I'll do the shifting in order to keep the power and RPMS up for cooling. I'll downshift before dropping to 1400 RPMS. I've never had an overheating problem on either the transmission or engine - I like my Scangage.