I thought I was smart and bought a Sea Flush funnel (seaflush.com) and now I see that there are no sea strainers on the raw water line coming into the boat. That makes this fancy funnel thingie all but useless for winterizing the engines. (should work ok for the AC and generator I hope)

So I have been scratching my head about winterizing for a week now and have to get on it because my pull out date is fast approaching.

The 1988 Santego has closed cooling, so the system works like this (I think The raw water comes in and goes straight to the Walter V-Drive and from there it goes to the transmission cooler on the way to the water circulator, where it goes through the engine heat exchangers and then out the exhaust.

I have read through the Walter info and the engine manual and there are suggestions to pull and drain everything. I was thinking rather than go through all that, can I not plumb in two Perko Flush Pro gizmo's into either raw water intake and then use the engine to draw antifreeze through everything and just leave it?

What do you guys think?