2017 HD 2500 CC L5P D-Max, these are typical numbers empty and dragging the box at my usual 75-80. Under ideal conditions I did once see 15.5 with the trailer at 65mph (construction zone), and 28.6 empty with cruise set at 70 mph for 80 miles.
My D-Max is very sensitive to outside air temps and headwinds kill towing milage, and of course leaning on the pedal.
When this truck was new I had the dealer monitoring DEF usage as it seemed to guzzle the stuff while towing, which is 95% of it's usage. Over time that changed and now with 44K on the clock it's not an issue.
Other than recalls for seat belt and block heater it has been trouble free.
Bill W
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06-17-2022, 07:03 PM
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