Newer Cummins with Exhaust Fluid

I have about 12000 miles on my 2014 srw with 3.42 rear end. I average 15 to 17 mpg everyday driving around town with a little freeway driving. 7o mph on interstate no head wind and I can coax 22mpg out of it. Towing 14,000 I get 10 to 12mpg usually in the high tens. All hand calculated. The computer usually reads about two mpg higher than hand caculated.

This is slightly better towing than the 2005 cummins I had but I could do slightly better on the highway not towing. BUT, considering the extra power with 2015 and the improved handling all I can say is that I love it.