Thank you very much for all the great question and putting up like a newbie like me. Please excuse me if this is a dumb question but do you drain the anti-freeze in the spring or is that not needed?
I have a 2003 SeaRay 182 with 4.3L Mercruiser that I am winterizing myself. The manual is very generic for multiple different SeaRay models.
As I am winterizing the boat I remove the 5 blue plugs to drain the water. In the manual (which is generic and not specific to the 4.3L) it talks about...