My bad.
Aluminum anodes except stern which has one each aluminum and zinc.
Not from barnicle buster or old coolant, all just changed in annual maintenance. Been 20 long hours since I used it. Engine is perfect.
I have found this every time I clean cooler and change that anode. May shoot message to Steve....
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36 Grand Banks Europa
Montgomery, TX
Blog: "grandbankschoices"
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