Tips for getting the best MPG towing?

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BossHogg

Senior Member
Joined
Feb 23, 2014
Posts
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Location
Oakland Township, Michigan
Ram Year
2015
Engine
6.7L Cummins
For those with the Cummins engine, download the Cummins Power Spec application and learn what is the most efficient RPM for your speed and load.

https://cumminsengines.com/powerspec

FYI, it isn't a friendly app to use and requires a number of difficult parameters to get as input but the results are amazing. I use to run, while pulling my 15K RV, in 6th gear at around 60 MPH thinking the lower RPM would yield better MPG, boy was I wrong. The best efficiency is an RPM range from 1,600 to 2,000 and my MPG increased shy of 2 miles per gallon.
 
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