RAM 2500 6.4L towing Observations

[Rbertalotto]

I just penned a quick article to my web site on my observation from towing my travel trailer over 3000 miles with my new Ram 6.4L gasser.

I monitored 13 tanks of fuel using various octanes and transmission setting to try and get an idea of what returns the best MPG.

Hope you find it interesting...
http://rvbprecision.com/rv-projects/ram-2500-6-4l-hemi-mpg-observations.html

 

[Riversdad]

Thanks for this, it's the kind of real world information that I can use in my engine choice for my next truck.

 

[Tex68w]

I enjoyed the write up, I would like to see something similar for a period of tanks with no towing.

I have a 2017 Ford F-250 6.7L PSD and the 2018 Power Wagon, both lifted and on 37's. I agree that the diesel never hunts when under load, but when both are driving with little to no load they get practically the same MPG's. I have also noticed like yourself, that the 6.4L gets much better fuel efficiency between 60-67mph than if you do 70+. In my experience over 5500 miles, it nets nearly 2.5 mpg's better at 65mph and under when compared to 70+.