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I know these are Diesel engines but I checked some very good scientific testing that was done on the 3.5 Ecoboost engine. I would suspect a diesel isn’t much different. Gas mileage went down 20% from 60 MPH to 70. Then add in wind a head wind or tail wind differences in the road grade and driving habits different in temperatures it’s no wonder these figures are all the place.
I would bet any of the trucks driven the same place same day same speed, same every thing there would be no verifiable difference in the fuel mileage. They all have about the same size engine same manufacturer for the fuel injection system same compression ratio, again almost the same everything.
How could there be any verifiable difference in fuel mileage?
Lynwood
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