HuckleberryHunter wrote:
Similar trailer specs to yours. My 2003 1/2 ton Silverado v8 gasser got 10-12 mpg towing. My 2016 3/4 ton Silverado diesel gets 10-12 mpg towing. Fortunately in my area diesel tends to be cheaper than gas, but it’s marginal. FYI.
The only way to get much better mileage is to get a pre-emission year diesel or do a delete on a newer one.
There is about 0 chance of this in an apples to apples comparison.
Also the delete statement with respect to significant mileage difference only holds true for dpf equipped trucks, pre def/scr. I.E. 07-10 models of all 3 and up to 13-14model Rams.