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Old 25-10-2009, 18:49   #1
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Join Date: Oct 2009
Location: Tulsa, OK
Boat: Hylas 54
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Zincs Needed on Freshwater to Saltwater Conversion?
I am preparing to truck my Hunter 356 with a Yanmar 3GM30F enigine from a lake in Oklahoma to the Gulf Coast. Do I need to do anything with engine zincs since I am changing from freshwater to saltwater?

I've read other forum threads stating that Yanmar put cupronickel heat exchangers in all the fresh-water cooled GM series and do NOT need zinc's. To be safe, I'd change them anyway but, I've looked, I can't find ANY, anywhere!!!! The manual does not give a diagram.

If I'm now feeding it saltwater do I need zincs?

Any other saltwater changes I should make?
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