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  1. #11

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    When it comes to spark plugs, I highly recommend using only AC Delco plugs.

    2013 Silverado LTZ White Diamond Crew Cab


    Mods:
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    Airaid MIT
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  3. #12

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    When I got my truck it had the 100,000 mile "tune" and 100,000 mile platinum plugs. When I replaced them, I went with Bosch platinum 4's with the iridium tips and I guess I am fortunate because I have never had issues with them the 2 times I have replaced plugs since then.

    I don't know why people have so much trouble with "Non-Delco" plugs.

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