Dave we get between 9.5 and 11.5 MPG when towing at 70 MPH. Head/tail wind and elevation changes have the biggest impact on the numbers. I would say you will be in the 9 - 11 MPG range running at 60 MPH. That's just a guess though.
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2018 Ram 3500 Laramie Longhorn 4X4 Dually Cummins Aisin CC LB / B&W Companion hitch
50 Gallon Transfer Flow in bed tank w/ Trax 3
2018 Montana 3121RL
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