Thread: Aluminum Anodes
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Old 08-04-2021, 09:05 PM   #15
Graeme Walker
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City: Newmarket
Vessel Name: Confirmed Aquaholic
Vessel Model: Bayliner 4788
Join Date: Aug 2018
Posts: 21
Cummins said any anode within the engine should be zinc, fresh water, brackish or salt. I had zinc before the aluminum in fresh water and they did develop a coating, no noticeable damage however. Martyr did not recommend Mg if going to salt water. I changed over thrusters, trim tabs, and shafts to Al. Kept zinc in Cummins and Westerbeke generator.
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