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feul milage

  1. Diesel Diagnostics
    I have a 1999 7.3 powerstroke does anyone know a trick to help get better feul milage while driving around empty but I need the power when I pull my tralier. I lvoe the power of the 7.3 but empty I am only getting about 12 to 14 mpg? P.S. if anyone has a set of mirrors 04-07 I might be...
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