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Old 06-27-2018, 10:18 AM   #6
Mountain

 
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Drives: 2017 SS 1LE, 2016 1SS (previous)
Join Date: Apr 2016
Location: Metro-Detroit
Posts: 1,871
Copper plugs will just wear out faster. As long as the heat range is correct, it shouldn't be an issue as far as "safe to use".
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