Forum Discussion
Durb
Jul 22, 2022Explorer
I towed a flatbed trailer with a SeaDoo, maybe 1,000 pounds total on a long haul for a houseboat trip. Still cost me 3 miles per gallon, 21 to 18 MPG. The truck had lots of stuff in the bed and there were plenty of grades. The best my 5.9 Cummins has ever seen is 24 MPG, flat freeway, no wind, empty bed except for auxiliary tank. My truck's sweet spot is 63-65 MPH in OD.
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