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  1. Concerned

    F150 Ecoboost Chat
    I have a 2011 Ecoboost SC 4x4 with a 3.73 rear end. I have noticed lately that my mileage is crappy. I'm talking barely getting 15mpg on the highway. My tires are BFGoodrich 10 ply all terains and slightly taller than stock, but I was still getting around 18-20 mpg on the high way with them on...
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