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fuel mileage
Ok I cant stand it anymore, I have a 2002 ford f250 4x4 supercab long bed with 285 75 16 tires and I am averaging 13.3 to 13.7. this is manually calculating. I have only had the truck for 2 months and it has always got poor mileage. Also the warm up valve is unplugged any ideas to get better mileage or things to check to get better mileage would be greatly appreciated.
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