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Honestly, I just realized my 2015 Duramax started idling smoother after I switched to a different fuel filter brand last month.

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2 Comments
nancybennett
Wait, are you sure it's the filter brand making the difference? I've found that a smoother idle after a filter change usually just means the old one was clogged up. Any fresh filter would probably do the same thing.
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margaret_torres
Yeah, you're probably right about that.
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