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Tom the carpenter

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  1. Hi I have owned a 2007gm 2012ford 2015gmc a 2018gmc all diesels,they start out back then with only 330 hp and went up to 435.every one of these trucks averaged between 12.9 to 13.4 miles per gallon over the years of me owning the trucks .now I own the 2024 gmc with the new and improved engine with more horsepower an it averages 10.2 to 11.2 miles per gallon.love the hp hate the mileage
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