Originally Posted By wkroncke17
Finally took the new truck on a road trip to Southern Illinois.
Down highway 57, one of the most boring drives in the world, I was in no mood to try and conserve fuel.....so I was on the throttle.
I kept it pretty much between 85 - 90 the whole trip.
I checked it when I got home and averaged 12.3 mpg.
My '06 Deisel would get 17 - 18 at the same pace.
Another thing I'm not used to is the delay, and the downshifting when going to pass a car.
The Cummins had the torque to allow me to just give it some throttle and the truck would go NOW!
Don't get me wrong, I love this new truck, it has way more positives than negatives.
Next up is to put the plow on, I'm going to have to adjust the way I plow snow also.
Updates to come!!


Wally, you should know that once a Cummins gets close to 2000 RPM the fuel mileage always suffers! Every Cummins truck I have ever owned had the best fuel mileage at 1800 RPM. work


The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.

JB Rhinehart, Realist

A-Body's RULE!