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lenr
Jul 28, 2022Explorer III
2012 F-350 CCSB SRW 6.7 3.31 axle. 24' box 6500 lb., 27' fifth wheel 9400 lb., & 37' fifth wheel 13,500 lb all have averaged around 11 mpg. I believe that aerodynamis is most significant effect on towing mileage.
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