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7.3 fuel mileage issues
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  1. 99-03 7.3L General Discussion
    Howdy! I just put a wonderful 7.3 on the road. It's a '99 F-250, reg cab, long bed. I have a 1500 pound welder generator mounted inside the box. I added two extra springs on each side in the back. She sits nice. I'm having major fuel mileage issues. For 130-140 litres of diesel, I'm...
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