Big dozer has Cummins diesel v8 automatic transmission engine, runs good serious powerful. Tires are all good tread. This was a military loader so it's built extra thick as you would say. Grandpa is retiring and won't need this anymore. Engine uses a little oil, tranny is excellent condition. RIGHT NOW BATTERY IS DEAD AND IGNITION SWITCH NEEDS FIXED SO WE WAITING ON WARMER WEATHER TO HAVE MECHANIC DO ALL THAT THANKS