I have read several things online and seen some stuff from seadoo however you know how they are on how detailed they get in the books "see dealer".The thing I am unclear on is making sure there is no water left in the system and how to get the antifreeze in it? What would be wrong with just taking RV antifreeze and pumping it thru the flush port with motor running till it runs out pink. That should be good I would think? Then Fog the cylinders and make sure the gas is treated with Stabil. This is the first year I have had this craft.