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    Winterizing 50 IO in water

    "I have a Mercruiser I/O 2001 "I have a Mercruiser I/O 2001 5.0L M C/AI 220. The Mercruiser Manual seems to be less than helpful, it lists the items to drain but then says if equiped. In inspecting my engine I found 5 blue drain plugs, hoping that is all. I have read the treads posted but most...
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