Originally Posted by MM879
I would look for a 2018 or newer RAM 6.4L Hemi. That is the the first year for the 8 speed auto trans. I have a 2017 6.4L, 6 speed with 4:10 axles and it get 1 mpg less than the Diesels. Diesel is great if you need it. I don't purchase for the 1% use.

Does anyone know what the RPM difference is between the gasoline and diesel engines when towing an equal load?