dc873cf wrote:

We have several at my company. Two F350 CC DRW were used for nightly runs between Las Vegas, Salt Lake City, and Elko. We were racking up 600+ miles per night for a total of 230k miles before we moved them to lighter duty. They were towing car hauler trailers, but not usually loaded very heavy. They were built around the time your candidate truck was. The fuel system was not reliable. One truck went through 5 fuel pumps and two sets of injectors, and the other truck, through 4 pumps and 1.5 sets of injectors. Other trucks used less did not have problems. Based on this, I would say that this particular year is not a good choice for a heavy-use application.

720Deere wrote:



You are absolutely correct! The 7.3 isn't as rock solid as people would have you believe. With both in stock form I would say the 7.3 and 6.0 are very close as far as reliability. Bump the 7.3 up to the stock hp level of the 6.0 and the tables start to turn.

Even at stock hp levels the 4R100 transmission behind the 7.3 is prone to failure. The 5R110 behind the 6.0 has been known to handle well over 500 rear wheel hp before it becomes unreliable. The beloved Allison behind the Duramax will puke it's guts out at anything above 400 hp.

I've said it before and I'll say it over and over, many of the horror stories that you hear about the 6.0 come from people who tuned or "chipped" them to more than 400 hp and abused them severely. The 03 and early 04 models had more issues stock but not so much for the 05-07s.

Basically it's a pick your poison sort of thing. You can spend $2,000 for a head gasket job on the 6.0 or you can spend $3,000+ for a trans rebuild on the 7.3, Duramax or Cummins. The 6.0 has a 100,000 miles/5 year warranty so basically you have more than 60,000 miles and 2+ years left on that truck. Most likely if it is to become a problem child it will do so before 100K. With your clean OASIS report, I wouldn't sweat it.