You threw out the challange trying to imply the 6.0 PSD is not up to your 7.3. I simply called your challange. I don't need to tow any camper, my current RV has a Cat C11 diesel that pushes it along just fine. The 7.3 PSD trucks I had were so bad that they drove me to drive a Dodge with a 5.9 for almost 10 years. It was a great truck by the way. However, as trucks age they will not be worth the expense after about 10 years or so because no matter how great any engine is, the rest of the truck will wear out if it's used. My only MAJOR, and it was major, expense with my Dodge was buying a transmission that would hold up. The 7.3 Fords share that exact same problem.
I had a leaking skirt gasket on my '06 F350 4X4 crew cab dually when I bought it, but it was covered under warranty. When it was replaced I had the tech, who lives, breathes and eats, diesel truck pulling install ARP head studs and a couple other little things. He told me that I'd have to try to tear it up and even then I'd have a hard time. Three years later with nearly 600 hp, it runs perfectly, will tow well more than it was designed to tow and has been 100% reliable. The transmission has been bullet proof as well. Combine that along with decent fuel mileage and I don't see how you could ask for more; especially when the truck is still worth more than I paid for it since I bought it when we had our first fuel prices topping $5 a gallon for diesel.
I'll keep this one for about 10 years like I've done with all my trucks that have been good trucks and then I'll evaluate what's on the market then. I have absolutely no clue what will be my choice in 6 or 7 years. About the only manufacturer that will be off the table for me is GM.
