Question:

Rather than what is essentially a drag race up a mountain, which isn't very "real world", has anyone seen a test wherein a diesel equipped rig had to haul a load up a hill while MAINTAINING speed? Which one did best without having to downshift? Stock as well as modified? That's how people really tow-you're rolling along already, and are circuiting a big hill with a heavy load, hoping you won't cause a traffic jam behind you because your rig is slowing down a bunch. A motor that shifts less frequently under load is more desirable. The Ford would probably have an advantage after the downshift if it has a few hundred more useable rpm's, but how do the diesels do pulling in the gears they are already in? In comparably equipped trucks, of course.

Has anyone seen a test like that? Could you post it please?