I am planning to use my boat soon and I am paranoid about damaging the engine when the nights get cooler in the spring. What can I do to ensure nothing gets damaged. I have been told to drain the block/manifolds etc. Can I also just suck up antifreeze through the raw water intake ? Also the boat is a mercruiser 350 I found most of the plugs. Does anyone have pics of all the plugs on this engine that I can use for refrence ? Thanks
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