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    3. how to improve gas mileage on 8.1 gmc
    how to improve gas mileage on 8.1 gmc

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    0  Views: 1138 Answers: 3 Posted: 14 years ago
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      3 Answers

      K-N air filter cost about $100.00. Rechip the computer, cost about $70.00. Guaranteed to pick up 7 to 10 mpg.

      14 years ago. Rating: 2
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        franklin5

        ed knows what he is talking about,also some say synthectic oil hepls
        commented 14 years ago

        Have a friend tow you to the dealer and then buy a better mileage vehicle.

        14 years ago. Rating: 2
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          Put it in neutral and only steer it down hills.

          14 years ago. Rating: 1
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