![]() Closing the intake seacock, transfer the hose to the bucket. For more information, check out this Gold Eagle's article explaining the product's proper usage.Ĭontinue the process by filling a five-gallon bucket (or the convenient DIY kit mentioned above) with non-toxic antifreeze. I suggest the STA-BIL fogging oil (check price on Amazon). Spraying fogging oils into inboard and sterndrive engines is slightly different than spraying it into outboard engines. Spraying Fogging Oil into the EngineĪfter applying the antifreeze to your engine, and while it's still warm, the next step is to spray fogging oil into the engine. To make it easy, boaters can purchase DIY kits like this Camco Winterizer Kit (check price on Amazon here). This allows the thermostat to breathe, letting both the coolant and fuel stabilizer circulate through lines, carburetors and injectors. Using your fresh water source ( boat hose and faucet), allow your boat's engine to come to temperature. To drain the lines, leave the sterndrive stored in a down position. So a sterndrive has to be treated like an inboard engine, but with a few additional steps to protect the lower parts. Essentially, a sterndrive is an inboard engine with an outboard drive system. When you hear the word sterndrive, it's important to know what it means. Once the engine block is drained of coolant, then you add the propylene glycol antifreeze. You'll want to follow your boat manufacturer's specifications to drain the engine block. Avoid ethylene-based antifreeze, as ethylene can release toxins into the water. Purchase a non-toxic propylene glycol antifreeze (check price on Amazon here). The last thing you need is to find a milky consistency in your oil and to have to call your mechanic.ĭon't contaminate where you play. Freezing can be harmful because it means expansion, causing stress and eventually cracks. Adding AntifreezeĪdding antifreeze to the engine prevents any water condensation or otherwise from freezing. The second step is spraying fogging oils into the engine. Add Antifreeze and Spraying Fogging OilsĪfter your motor is cleaned and prepared as described above, the first real winterization step is applying antifreeze. You can do this one of two ways: Run the engine while the boat's in the water or run the engine with an adaptor or motor muffs and a hose running the water supply. Stabilizer prevents buildup, while your boat sits for long periods, not only in your fuel lines but also in your fuel injectors and carburetors. I suggest using STAR BRITE EZ-To-Start Fuel Additive (check price on Amazon). If you don't fill up your tank, you'll wind up with water inside, which can cause severe problems for your engine.Īdd the fuel stabilizer (or whatever your boat's Owner's Manual suggests). Air is bad for the tank because it brings moisture and, with low temperatures over winter, condensation! Why do you want the tank filled with gas over winter, you might ask? The answer: This decreases the chance of getting air into the tank. ![]() Prepare Your Inboard Boat Motor for Winterizing How to Fully Winterize Inboard Boat Motors in 4 Steps 1. This post focuses specifically on winterizing motors. I've removed a few steps from the entire boat winterization process here, like removing the battery and keeping it on a trickle charge. I've already covered winterizing pontoon boats, which usually have outboard motors.įor those of you with powerboats, here are the steps to winterize your inboard boat motors. This process prevents gunk from building up, keeps condensation out of the fuel tank and just overall keeps your engine healthy. If you've got an inboard or a sterndrive (inboard/ outboard) boat motor, then winterizing is an absolute must-do. Before you get to that, though, there's one crucial thing you have to do: Then, you'll be moping around winter boat shows to fight the winter boater's blues. It's the end of boating season and time to reluctantly start strapping down those winter boat covers.
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