Originally Posted by Labrador Dave
My Diesel F-350 when in tow mode wants to shifts speeds at 2500 rpm. Is this normal? Normally the transmission shifts at around 1700 to 2000 rpm when in overdrive. Also do I need to even use the tow/ haul button when haul firewood load in the bed of the truck? My 2nd F-350 is a manual 6 speed, so this is new to me. Want would the normal rpms be with a 6.0 liter diesel engine with automatic transmission?
I don't pay attention to my tow haul shifting, but I only use when towing my boat and camper ,it will downshift at speed and hold you back towing down grades so you don't have to use your brakes hardly at all just touch brake and it will downshift and hold you right there, saves my brakes.
And it also holds the gears longer to give you more pulling power.