Winter Boat Storage Tips

Fluids

Leaving a boat full of tepid fluids is only asking for trouble. Do a full oil change and install a new oil filter. Also drain all the transmission fluid, if applicable, and replace it with a fresh batch. Two camps heed the fuel advice: one says to completely drain the fuel tank; the other says to fill up the tank and mix in a fuel additive. Go with whatever your boat dealer recommends.

Filters

Grimy filters can be as detrimental as grimy fluids. In addition to the new oil filter, install a new or freshly cleaned fuel filter, fuel tank pick-up screen, carburetor fuel screen and flame arrestor.

Water

Drain water from hoses where it could get trapped and corrode or freeze. Remove the hoses or, at the least, the hose plugs so no water gets trapped. Water draining includes the cooling system, raw water pump, transmission cooler and engine circulation pump. Clean and store all hoses and attachments inside the boat so you can find them in the spring.

Battery and Spark Plugs

Because the boat will be idle for several months, remove items that could corrode. Remove the battery and store it in a clean, dry place where it won't freeze. Boats can be stored with old spark plugs, instead of new ones, so the new ones won't corrode or become fouled.

Finishing touches

A few more tasks complete your boat's winterization. Lubricate any cables -- such as the steering, shift and throttle cables -- as well as the trailer wheel bearings. Clean the boat's exterior and interior. Interior cleaning should involve applying a liquid protector on the seats, engine cover and other surfaces that need it. Wash and wax the boat's exterior and, once dry, tape down the exhaust flappers so critters don't crawl in. A boat cover provides the best protection during the winter months.