True boat winterization entails much more than just draining the water. Boat Winterization includes draining the engine, but then refilling the engine with propylene glycol to inhibit corrosion, fogging the engine, draining the sterndrive, stabilizing the fuel system, checking the water pump impeller, etc. This video outline the steps required to winterize and prepare your Volvo Penta 5.7L GXi SX Sterndrive Marine Engine for over the winter storage. 

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