I had a 01 7.3, and I have to say it was a great truck, I also had/have a 6.0, 6.4 and a 6.7 and honestly the only one that was a piece of crap was the 6.4, no power and never. ever loaded or empty did it get 10 mpg mostly towing 5 or less, it was a joke. The 6.0 was OK, but coming over the grapevine at about 80 in 90 degree temps hauling a load of bikes it got warm, never hot, and from that time it ate coolant, had it in twice for warranty never could fix it which is how I ended up with the 6.4. Currently I drive a 6.7, love the truck and the tranny, it will do 19 empty driving 80 and I routinely get 11-13 pulling a 41' toy hauler 75-80 mph. to make a long story short I like it as much as my 01 and in some instances it is better as well as way quieter. I liked all my 7.3's, had 3 of them got nothing but good to say about them. like I said the only jonah I've had is the 6.4.