6 Essential Outboard Winterization Products
Winterizing your boat’s outboard motor properly is something you don’t want to overlook when it comes to storing your boat during the offseason.
Here at Boats.net, we’ve published about a dozen articles and videos related to the how’s and why’s of outboard winterization, but we’ve never published an article that dives straight into the products used for this crucial offseason maintenance process. With that in mind, here are 6 essential winterization products you need to prepare your outboard for offseason storage.
Any exposed metal parts or components on the powerhead of an outboard are susceptible to rusting. All external metal surfaces should be sprayed with corrosion guard before putting the outboard engine into storage.
Untreated fuel absorbs moisture from the air, until the fuel undergoes phase separation, which will require the fuel tank to be drained. The fuel tank should be filled with fresh fuel and treated with stabilizer. Run the motor for a couple of minutes to draw fresh, stabilized fuel into the fuel system before putting it in storage.
A cooling system flush should be part of your outboard’s regular maintenance schedule even if it’s not going into storage. However, the cooling system should be flushed with marine coolant to prevent corrosion, and to keep any water trapped in the system from freezing during winter in colder environments.
Lower Unit Oil
Changing the engine oil is part of any outboard’s regular maintenance schedule, but the lower unit oil is often overlooked. Both the engine and lower unit oil (gear lube) should be drained and replaced as part of the winterization process, and replacing the lower unit oil in particular can be done in minutes with the lube and a hand pump.
Your outboard’s battery should be disconnected and removed as part of the winterization process. Keeping the battery connected connected to a battery tender helps preserve it while it’s in storage. Battery tenders are also known as smart chargers or trickle chargers, and they provide charge to the battery only when it needs it to prevent overcharging.