"We own 2 F-350s with over 150,000mi on them both. Ones a 2000 and the other is a 2003, both 7.3L's 4x4. A suggestion when you get one and want it to last is to put a transmission pressure lock on if your going to tow with it because Ford designs them to slip into gear which won't last long. We SuperChipped them both and are getting 19.5mpg loaded or not. Our friend owns a 6.0L and the new 6.4L and says they are both terrible designs. He tows or Hotshots accross America for a living and he uses the 7.3L and only the 7.3L. They're just not built to tow and work like the 7.3L If your driving around town it would be good for that but not for towing."
"One should note that this is the 6.0 diesel, see my review on the 7.3 I have also.
Truck is stylish, no prob w drive train, but the engine, although lotsa power and good MPG with trailers, has caused it to be in the shop more than out, injectors, sensors, wiring have cost $10,000 more than the 7.3 did which has 50K more miles.
Always wondering when the next breakdown is gonna be and how much it will cost
Lifelong Ford owner, but seriously thinkin about a Dodge"
"My '04 Super Duty has been great until I started pulling my new horse trailer. So far, one head gasket and on my most recent cross country trip, one EGR cooler. I took it to a Ford truck Center in California when the EGR cooler went out and was told by the Service Rep that he had the same engine in his truck and worried about it everyday. Said the 6.0 is great for a family vehicle, but when you put a trailer on it, or heavy duty use, the engine just doesn't hold up. Of course that made me feel better, considering I only have 40K miles on it and already have been on the side of the road with it twice."
"Overall very satisfied with the 7.3 diesel. Really happy I did not buy the 6.0. Once broke in it got great mpg. 18 before the chip, and 20 with the chip. Towing my 30' fifth wheel camper (13,000) lbs, 14mpg. Had to replace rear wheel bearings at 38,000, ball joints at 52,000. Truck is up to whatever I put behind it towing, and has a nice, much quieter inside than previous powerstrokes. Also rides suprisingly well for a F-350. Not looking forward to trading this one in. Not at all impressed with the 6.0, or the new 6.4 twin turbo. Both lack h.p. compared to the other big 2. Ford needs to go back to the old 7.3 diesel. Why fix what wasn't broke?"