I know this has ben asked and answered a thousand times over - but I still am a bit confused. I am hoping someone can clarify some things for me.... I am just looking for some very basics to make sure I properly winterize my newly obtained Mercruiser 470 I/O motor. I read so much that it has all ran together and I notice so many people doing so much and going wayyyy overboard with it - pumping antifreeze in the block and so on.. I just want to do it the basic and proper way without the risk of any damage to my boat come freezing temperatures that will be coming around my way soon. I hope someone can shed some light on this for me. I have read everything from just unscrewing a screw to filling the fuel tank and adding new antifreeze and so on. I just want a simple basic checklist to properly winterize. Can anyone help me out ?