09-15-2022, 04:13 PM
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Yenko Contributing Member
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Join Date: Jun 2001
Location: New Berlin WI USA
Posts: 2,703
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Possibly, the freeze plugs have become a sacrificial anode. Brass or stainless-steel plugs may solve the problem.
https://www.corrosionpedia.com/defin...rificial-anode
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