When towing with my ram diesel how do I tell when I should downshift. it seems to tow so easy, but slows when going uphill at 60 what should my rpm show.
Our 2001 Ram 2500 CTD is very happy at 1,800 rpm doing 60 mph, come to a hill and drop from OD to direct (5th to 4th) let the t wind to about 2,200 or a bit more and go.