This truck has been well cared for and tons of money put in it. I have around $50,000 in it. It is getting 6.8 MPG at around 70 MPH hauling 90,000 lbs. It has a CAT 3406E 5EK with 300,000 on complete in-frame with paperwork. Transmission was new when I bought it, it originally had a super 10 and was replaced with a new 13 spd Eaton Fuller. I just replaced the differential oil a week ago in both rears. I have all maintenance and repair records. I am getting out of trucking to start a new career to stay close to home for personal reasons. If you"re looking for a great truck for a good price then you just found it. Within the last two years I have put on a new condenser, alternator, a/c compressor, a/c lines, coolant lines, oil cooler, new oil pan, starter, all new u- joints, air to air cooler for tranny, fan clutch, clutch brake, clutch linkage, wheel seals, new brakes, new leveling rod, new bunk heat blower fan and lines, air pressure gauge for weight, new pigtails, new cab shocks, new wipers, new exhaust manifold, done the overheads, recently had it aligned and replaced the injectors and had it tuned up, new stacks and mufflers, re-wired all the lights, and replaced the air regulator for the passenger window. As far as I can tell this truck is more than ready to go over the road if so inclined. It has 150 gal tanks and is smooth on the road.