I am considering, no major decisions or commitments made as yet, buying a diesel 3/4T to pull my 5th wheel trailer with. It's a light weight model (5200lb dry) meant for 1/2T trucks and that is what I currently tow it with. I use my 2006 Tundra, w 4.7L, rated to tow 7,000. The truck is my regular driver. I didn't say daily, on purpose cause sometime I don't start it for 3-4 days in a row. We are retired and if the wife goes along, we take her car, unless we need to haul something big. While towing this trailer I get an avg of 9 mpg on reg gas. About 17-18 freeway.
In the Ford line it would have to at least have the 7.3 Powerstroke, and not the older 7.3. I have read too much negative about the older engine. . .
My needs are not huge, and I am considering the upgrade in power cause a lot of rental companies are requiring 3/4T min. That's not a big reason, but it is one. I would like to have considerably more grunt for pulling long grade with the 5th wheel, and better brakes.
I do not see us ever getting a bigger trailer, smaller if anything . . .
I'm going to speak to the Fords, because that's what I know.
By the "older 7.3," I assume you're talking about the IDI engines. (non-turbo) That was '88-'93. They were actually great engines. Didn't have the power of the 'Strokes, but would run forever.
Generation I 7.3 PowerStrokes are '94-'97. This is basically a 7.3 IDI with a turbocharger and different heads. (and more horsepower)
Generation II 7.3 PowerStrokes are '99-early 2003. This is basically the same as the Gen I, but with a bigger blower and an intercooler (aka: charge air cooler or air-to-air cooler). (and again, more horsepower)
BTW, There is no '98 Super Duty, and mid-year '03 they started installing the 6.0. (FWIW, most of the 6.0 engines were very, very good or very, very not. You typically had lots of trouble or none at all)
I've had several of these trucks and currently have a '97 F-250 and a '03 F-350. Both are great trucks, and no, they're not for sale.
Things to be aware of:
All of the 7.3 Navistar engines were subject to cavitation (electrolysis) in the cooling system. This is easily prevented by adding a SCA (supplemental coolant additive) or a "pre-charged" coolant with bitterment in it.
The original clutch and "dual-mass" flywheel was a weak point on the standard shift transmissions. That is fixed by replacing with a LuK clutch/flywheel.
I agree with your logic. I have a F-350, F-250, F-150, and a Toyota Tacoma. So, I have a choice every time I want to pull a trailer, and I don't tow with the 1/2 tons. The bigger brakes and heavier suspension, along with the torque of the diesel, just make the Super Duty a superior tow vehicle when compared to a 1/2 ton. There is nothing like having the right tool for the job.
And, I have big, heavy trailers. 24' enclosed stock trailer, 24' utility trailer (both gooseneck), and a 30' fifth wheel.