I had a 2000 GMC Serria 3/4 ton with a 6.0 gasser. I purchased the truck with 92,xxx on it drove it as my daily driver for 5 1/2 yrs and of course it was my tow vehicle. At 176,xxx it started giving me trouble in the engine and transmission. I had always wanted a diesel But couldn't afford a new Sierra with the Dura Max and the Allison transmission combo. I started doing a little searching and found a 2001 F250 with the 7.3 diesel and it only had 26,xxx original miles. The truck looked very close to new. So I couldn't help myself, I had to buy it. That was just 2 weeks ago and I used it this past weekend to tow my camper. All I can say is it tows like a dream and I'm glad I made the switch to diesel