1991 int road tractor,10 wheel drive. the unit came from the navy cbs. all it has done is to stay on a ship in a rapid deployment unit. when they could it would go on land and then back on the ship. it has 3,263 miles on the unit. in the process of putting on a used 2500 gal tank. when done will send the after pitcures. hope to be online july 2010.