2017 Ram 3500 6.4L dually. Should I?

Ram 6.4 with camper Review TC Magazine

I found the review by TCM to be a little disappointing. Nobody purchases a gas engine for the fuel mileage. It just won't happen when towing or hauling heavy. And the magazine chose not to opt for the 4.10 axles that give both a better chance for the cylinder deactivation to work and adds 1000 pounds to the GVWR, thus increasing available payload that is something the magazine is almost anal about never exceeding. I seriously doubt the 4.10 axles would give any less gas mileage and maybe even better mileage when towing or hauling. Yesteryear the 4.10 axles would yield less fuel mileage than 3.73s but with todays transmissions it is not that big a difference, if any.