There are many variables which affect mileage on these beasts. So depending on how YOU drive, speed, terrain, wind, and load, the results differ. Additionally I have found the computer MPG to be about 1 MPG more optimistic than hand calculation (over 50K miles now and every gallon of fuel accounted for - how anal am I?).
That all said, I get around 10 MPG towing my 12K max GVW 2955. Some days are less, other days are more but normally the range isn't more than 1 MPG.
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Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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