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Old 01-16-2006, 07:20 PM
worzy worzy is offline
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Join Date: Jan 2006
Location: Neenah, WI
Posts: 9
99.5 Powerstroke mileage

I just bought a 99 F250 Super Duty extended cab. So far I have not topped 14.5 mpg, even when I deliberately try to stay off the gas and drive mostly highway. Could there be something wrong with my diesel? It seems to run fine.
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