Caterpillar MBN C15, 525hp, Jake and retareder (brake saver), 18 speed, 3:90's (Eaton) full lockers, Air Trac, 240WB, 4'6" spread. Details of recent maintenance listed in photos. $12,000 Michelin tires, $6000 alignment. Have current oil sample from last service and a dyno. Call with questions. In framed in 2017 at 1.1 million with paperwork. 1.5 million current mileage. Truck is off the road till it sells! OEM 6NZ pre e log stickers purchased from Wagner Equipment. Reasonable offers concidered. Very rare truck, very well taken care of. Perfect two lane hwy mountain rig. Original radiator was replaced just As preventative maintenanc, it wasn't leaking just showing its age. Must see in person to truly understand how nice this truck is. 970-456-2077