Forum Discussion
4x4ord
Mar 18, 2020Explorer III
ShinerBock wrote:
I was commenting on this "There is always people claiming they lock out high gear while towing and don't see any loss in mileage. I've never believed these claims..." Believe it or not, you can gain fuel economy by using a shorter gear ratio depending on your speed, load, and the engine's sweet spot. Even the Ford engineer agrees.
And yes, per Cummins, the 6.7L's sweet spot is 1,900-2,100 rpm, not 1,700.
I could have worded that better. When Ron is pulling his Mobile Suite I can see it being an advantage to lock out 6th with 3.42 rear gears and not notice a loss in fuel economy. For MeAgain to speed up from 60mph to 65 mph towing his TT to get better fuel economy.... well, I believe that he believes that.
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