Cummins12V98 wrote:
"Diesels have lost the fuel economy advantage that they used to have as far as towing goes."
Absolutely DISAGREE!!!
I towed 20,500# combined with my 98 12V 2500 SRW 4x4 hand calc West Coast toeing 10.5 mpg AVERAGE. The RV was NOT over 12' 6" and was NOT a wide body.
Same roads but 29k combined wide body 13' 2" high towed with 11 HO DRW RAM 4x4 9.5 mpg hand calc.
Same roads 33k combined wide body 13' 5" high towed with current 15 DRW RAM 4x4 9.5 mpg Hand calc.
Same as above double towing at 35k combined 9.0 mpg hand calc.
I say the mileage is MUCH better!
All of the older trucks got better fuel economy. The DPF, SCR and all of the rest have hurt fuel economy. Most guys that delete are doing it for fuel economy not to "roll coal"
https://www.drivingline.com/articles/59l-vs-67l-which-cummins-is-really-better/