6.4 litre HEMI vs Cummins
Hi all Just upgrade TV from a Dodge 2500 6.4 litre to a 2500 Cummins Looking to see if anyone else made this change to share your experiences on gas mileage. Did the cummins make a difference in...
Forum Discussion
ShinerBock wrote:
The Cummins gets horrible gas mileage.... It does get good diesel mileage though... ;)
Expect about 15-16 mpg(calculated) combined depending on how you drive and terrain. The computer may say 17-18, but it lies.
Also, when you tow over 5k, lock out 6th at speeds under 73 mph for best fuel mileage if you have a 3.42 rear end.
I have been towing the 8k TT in 6th without TH and getting better mileage. In 5th the 16K 5th and 8K TT got similar mileage.
