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Old 07-02-2016, 09:53 PM   #21
Admiral
 
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Join Date: Feb 2012
Location: Essex, Maryland
Posts: 10,606
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Typically saltwater boats use a 140 t-stat and freshwater use the 160.

The engine is more efficient at 160 but the warmer temp allow for salt crystals to form.

BTY you can call me Mike
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