I have a question on winterizing my '92 Seadoo. I installed an adapter to flush and run the engine on the trailer when needed. Could I use this same adapter to flush antifreeze through the engine? I have read a few of the post on winterizing but didn't notice anyone using this adapter. I made an apparatus that can run water through the engine while running, then with a turn of a valve, will switchover to anti-freeze. I would like to use it(the apparatus) because it seems easier than the funnel method. It was a great 1st summer with my craft and would like to thank all those who assisted me with info on getting it going!!!