engine tweaks | Ford Explorer Forums - Serious Explorations

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engine tweaks

  1. D

    4.0-L, Mileage improvements

    Hello all. Still new at this. I see where the mileage numbers for the 2009 version of this German engine are much better than those for my 1994 version based on the same block. Can any of the improvements be retrofitted? Thanks. Dirtypaws
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