Quote:
Originally Posted by JAT
That's odd.... My 1979 Perkins 6.354's both have pencil zincs in the heat exchangers...and they are 135 NA's...
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I just had my manicooler on the port engine ceramic coated, Greenwater marine exhaust who did the work will as part of their service add zincs. I chose not to have them added to mine. But anytime a heat exchanger is serviced adding zincs may be a option.