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Old 08-01-2018, 10:49 PM   #11
Mountain

 
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Drives: 2017 SS 1LE, 2016 1SS (previous)
Join Date: Apr 2016
Location: Metro-Detroit
Posts: 1,871
The AC Delco stuff with the modifier already in it never gave my SS any issue for 18k miles.

For the M6, use Redline D4.
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