Forum Discussion
davisenvy
Nov 14, 2014Explorer
My buddy has a 2006 MegaCab 4x4 Cummins. We take turns towing his bowfising boat. My Duramax gets 14mpg hand calculated. His Lieometer says he's getting 26mpg. After doing a trip in his Cummins hand calculated we came back with 14.2mpg. Most inaccurate gauge I've seen on a truck.
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