Full size truck mileage is always a challenge. We see the small economy cars hitting 40-50 MPG and our big trucks seem like to increase mileage, is close to beating our heads against the wall.
Synthetic oils in engine, transmission and differential will be a big step in the right direction. I drive mostly around town and some short road trips on good roads so dumped the spare tire and jack. With a 25 gallon tank, I often run on the bottom half of the tank which reduces fuel weight by about 72 pounds.
Keep us informed as to how your modifications work.
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