Dl5treez, thanks very much for your well-considered insight. Sounds like you work your trucks way more than I do. I drive quite a bit for work, but not loaded, and mostly local stuff. There are many 200-300 mile days, but all local/regional.
I don't think I broke in the '03 right. I was so tickled to get good mileage from a truck that big that I light-footed the truck almost all the time, trying to see how high I could get the mileage. Hindsight and a little education from this site and others indicates I should have loaded it after about 500 miles and broken it in harder.
I know the Cummins is a workhorse, but is it the best type of engine for what I described? It almost sounds like overkill. I wonder if the lighter-duty V8 diesels from Ford and that other company might be better suited to such use?
I love the Cummins, but seriously that Duramax is a pretty good piece. I eat crow saying that as I was a big opponent of the original couple year's worth. I don't like GM as far as I can throw them, but those trucks are pretty nice for a mixed daily driver/part time tower.
The old Fords came home from the dealership and were outfitted with transfer tanks, tool boxes, headache racks, winky lights, and all the rest of the crap the crews "needed" to play in the woods. The old Dodge was originally for my dad to use as a personal truck but was retired to a "toy" when the '07 arrived--the '07 is the new victim. My family is in logging and fishing so these rigs have all at one time or another either been off road or towing heavy with trailers and beds full of various items. The '03 Ford tows a a 30' bumper pull with race cars, quads, whatever else we can cram in it, plus doubles as my personal truck. The old '96 reg cab was my project truck after selling the '99 but I sold it to buy the '07 for my dad, as the '95 was sadly starting to become unreliable for a 74 year old man to dink around in the woods with by himself. Our '03 Dodge was an impulse buy at an auction--had it long enough for it to break down 9 times, none of which were engine related, and it was sold @ the same time I sold the GMC... . I often wish I had kept the GMC but there were personal feelings making me hate it by proxy. :-laf
I'm no expert, but am a professional mechanic/equipment operator/wearer of many hats and have seen the good bad and ugly with all of them. The 2007 Dodge is an improvement over the other Dodges I have/had but in all honesty after playing on the logging roads PART TIME over 3 years it is showing fatigue with interior fit & finish, rattles, minor unreliable non-Cummins parts, and such that my Fords never have experienced..... just this morning I attempted to roll the passenger window down to read a sign and the regulator went down, the window stayed there for a second then fell into the door..... just another example of those little things that drive you bananas.
The '95 has been primarily a highway truck for vacation trailer pulling, etc. It did not see as much work duty as the other rigs but has exhibited similar issues to the Fords that have been off road most of their lives at the same mileage intervals... . moreso than the 1996 but that truck is a bit of a weird one so I should stop talking about it so it won't break in half next week... .