Went to PHX. last week on a buying trip. Bought 2 5ers and a 94 Dodge 3500 CTD 5spd. Bolted in a 5th wheel that I had brought with me and hooked up to a M325 Excel 5th wheel. The ole girl had 159,000 miles on her and they could not tell me the last time the oil had been changed. 65 to 70 all the way home. 12 miles to the gallon and did not burn a drop of that dirty oil. These little Cummins engines never cease to amaze me. By the way if anyone needs a cheap dually... ... ... ... . I have it! Plain Jane, no tilt, cruise or cass. Rubber floor mats and tow mirrors. Make a good farm or ranch truck or a great drag racer! I bet it is light.