I Pulled off 21.7 MPG's with an F250 (V8, dunno displacement) from work on a 200 mile trip recently.
Truck had alot of weight from tools in it too, it literally coasted forever. I'm wondering if more weight = better mileage in more powerful vehicles cause it makes them hold their momentum/coast longer.
207 miles on 9.5 gal or something like that
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