CampingN.C. wrote:
I can tell you I'm at the upper limit of what the 6.0 can do at approx 8500-9000lbs. Sure, it does great on the flats but get it up in the mountains and it falls a little short.
Combine 7-8 mpg towing with a 26 gallon tank, well do the math.
The 8.1's were in the duallys and the workhorse chassis motorhomes, for a reason.
With the cruise set at 65 it'll hit second on a majority of overpasses, that get's aggravating on a long day of driving.
Upper limit at 9K? That is not even a warm up. I am running at a combined weight of 29K at 5-7K feet with my 2015 3500 with the 6.0L