How Do You Winterize A Mercury Boat Engine?
It is recommended that you perform routine maintenance on your boat engine every 100 miles, or once per year, whichever comes first. Winterizing your boat is routine maintenance that must be performed, once a year, for anyone who lives in a climate that doesn’t allow winter boating. If there is a chance that the temperature drops below freezing, winterize your boat. Open the petcock valves to ensure that any remaining water gets drained. Clean the valves with a piece of wire, freeing any blockages or debris. Remove one end of the water hoses that feed the engine block and the exhaust manifold. Pour antifreeze into the hoses until it runs out the petcocks. Pour a small amount of outboard oil into the water-separating fuel filter to fog your engine. Turn on the engine so that it can run and ingest the oil you just poured. Change the water-separating fuel filter (if you have one). Change the oil in the engine and replace the filter. Add fuel stabilizer to the gas tank, and run the engine
