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Message: [QUOTE="Arisley, post: 1291915, member: 67"] The long beds and the duallys have a 38. Gearing and tire size is killing you. The best way you are going to get the best mileage is keep RPM's below 2000 RPM. Everyday driving with my truck, keeping the max speed around 65. City streets and freeway, I will see about 17. On long trips, I will get over 20 if I keep it below 65. Drove from Downtown Fort Worth to Lubbock, stayed the night, drove to our stores there the next day, stayed the night and back to Downtown Fort Worth the next day. On one tank of fuel. Granted, before I left Fort Worth, I filled up my truck to the point that I squished a little bit out when I put the fuel cap on it. Drove in my Tow tune, and paid attention to the RPM's. I am driving a little Dodge Durango right now for work. With a 4.7 V8 in it. Sucky performance, 15 MPG everyday driving. Now when I get on a long trip, it does a lot better, at 75 MPH, she sips the fuel. Drove from Fort Worth to Frankston (south of Tyler) all freeway and got almost 30 MPG. [/QUOTE]

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