What is one of the first steps when winterizing a boat engine?

Changing the oil is a crucial first step when winterizing a boat engine for several reasons. Engine oil can contain contaminants, such as dirt, water, and metal particles, that accumulate during the boating season. If the oil is left in the engine over the winter, these contaminants can cause corrosion and damage, particularly in cold conditions where moisture can lead to rust. By changing the oil before winter storage, you ensure that a clean, protective oil is present to shield engine components from corrosion during the off-season. Additionally, fresh oil has the necessary additives to protect engine parts effectively while the boat is not in use. This proactive maintenance step is essential in preserving the longevity and performance of the engine when it’s time to use the boat again in the spring.