Is it necessary to winterize using a marine grade biodegradable anti-freeze before winter storage even if my owners manual doesn require it?
If your watercraft could experience any below freezing temperatures during winter storage you need to flush your engine and cooling system with a marine grade biodegradable anti-freeze prior to winter storage. Although many manufacturers claim their systems are “self draining” and do not require winterization, why take the chance? Any trapped water in the cooling system or passage ways, including the engine, heat exchanger, exhaust system and water box, will freeze, expand and cause extensive and expensive damage. With the PWC ProFlush system, your last flush of the season can be done with a gallon of marine grade anti-freeze treated with our flush fluid concentrate for complete protection from freezing and corrosion during the long winter storage period.
