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    duramax 3.0 fuel additive

    I've driven a diesel vehicle fro 16 yrs. there's always been a fuel additive to help keep the clean and lubricated. I have a 2021 suburban with 3.0 Duramax. Have 12,000 miles on it, 3rd oil change... I have asked several Cheve service techs what fuel additive to use...every one of them has a...

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