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    how to improve gas mileage on 8.1 gmc

    0  Views: 1095 Answers: 3 Posted: 13 years ago

    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.

    franklin5

    ed knows what he is talking about,also some say synthectic oil hepls

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

    Put it in neutral and only steer it down hills.



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