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Old 01-09-2017, 11:33 AM   #4
City: Northport
Country: USA
Join Date: Aug 2015
Posts: 1,447
"So, if we flush with fresh water and use zinc anodes aren't we losing the protection of the zinc when we run the engine in salt water?"

My main engines do not have zincs but with the outboards that I have flushed after use with saltaway and fresh water the zincs worked fine after the short rinses.

"Now let's talk about after coolers. The problem with after coolers is that there is a tiny barrier between the air side and the salt water side- an o-ring that separates the two"

Once again my main engines did not have this design or the associated issues you have described so far.
Perhaps the application would be more exact if it were "Fresh water flushing the Cummins 6b"
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