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    winterizing

    I am a new boat owner this year. I have a 1989 Merccruiser 3.7 with the alpha 1 drive. This is a closed system so I am not concerned about the engine block, it already has antifreeze in it. My concern is the sea water side of this cooling system. Should and how do I drain it???????????? or...
  2. B

    1989 Baretta 3.7 merccruiser closed system

    I am trying to figure out how to winterize this engine. My concern is the sea water system. The engine block has antifreeze so that is not a concern. What is the proper procedure to drain sea water , and is it important to fill the sea water system with antifreeze or just drain...
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