The arrival of fall marks the end of boating season and the ideal time to prepare your vessel for winter conditions. Taking steps to protect the engine ensures it will be ready to use when warm weather returns. Below, the boat repair and maintenance team at Glen's Precision Auto of St. Cloud, MN, explains how to winterize your watercraft’s engine.

How to Prepare Your Boat for Winter

1. Stabilize the Fuel

The combination of moisture and cold air will cause the gasoline to separate, allowing the ethanol to merge with the water in the tank. These conditions have the potential to corrode the metal and cause lasting damage. The oxidized gasoline can also harden and stick to the fuel tank walls. Treating the fuel with a stabilizer before storing the boat for the season will prevent these problems from occurring.

2. Flush the Coolant

While it can be tempting to wait until next season to flush your boat’s coolant, it’s necessary to perform the task before winter begins. When old fluid is allowed to sit in the engine, all the grit that it has accumulated will begin to draw in moisture from the air. Over time, this will corrode the metal, making boat repairs necessary next spring. 

3. Use Protective Oils

Exposure to cold air and winter precipitation can cause a boat engine’s metal exterior to rust and corrode. Applying a layer of oil will protect the steel or aluminum throughout the season. The oil creates a physical barrier against the cold air and prevents snow and ice from sticking to the engine and encouraging rust development. 

If your winter preparations reveal any problems with your watercraft, address these boat repair and maintenance needs before storing it for the season. The team at Glen's Precision Auto relies on their auto repair and trailer maintenance expertise to care for customers’ boats and keep them safe. Call (320) 251-4910 to schedule service, and visit their website to learn more about their work.