I have a 2016 3500 DRW CC LB 6.4 and love it. it has the 3;73 gears,if I had ordered it I would have got the 4:10's. I tow a 8500 lb TT and put the golf cart in the bed. it tows great. I can get 16.4 mpg empty and 9.6 towing on flat land. I am sure it would be far less in the mountains. The oil is easy to find and the plugs will be changed at the shop when needed. The truck is the best I have ever owned and I have had many. JMHO. Good Luck. BTW you can change the gears manually if you feel the need.