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2013 F-150 Horrendous Gas Mileage

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Hey Scotty I’ve got a 2013 Ford F-150 3.5 ecoboost with 130,000 miles. My father owned the truck before me and got around 16 mpg in town. I bought the truck off of him and got 16 in town for a few months. But now it’s dropped off a cliff. It went from 16, to 13, and now I get 10.5 mpg in the truck. Air filters clean and it had new spark plugs installed at 100,000 miles. I baby it and drive slow. Even more so than my father. Help!

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Have you checked the fuel filter to make sure it isn't clogged?

Also, do you know if the turbos are still healthy? Around that mileage it would not be surprising for one or both to be on their way out.

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