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  1. Duramax Seventh Generation: 2020+ (L5P)
    Coming from 2006 LBZ 2WD CC which consistently got over 20 MPG cruise on highway. Now just purchased 2022 4WD LT CC and cruising at 72 I’m getting 12/13 on DIC. does this seem right? My buddy has L5P 2019 lifted and gets much better. I know truck heavier than my LBZ but 16 years of engine...
    l5p mpg
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