While they do protect the engine to a certain degree, the difference in overall reliability and longevity is vast when compared to most fogging oil products out there. I consider this mainly as a supplementary engine storage spray, especially if I discover that I’ve run out of fogging oil and have to wait a few days or a week to get one. However, I’m going to have to stress that nothing beats the actual thing, especially if you want to enjoy the complete benefits listed above. If you don’t have fogging oil available on hand, don’t fret, as there are other fogging oil alternative options to choose from. When fogging an inboard boat engine, you spray on the intake or on the spark plug holes, as was shared above and demonstrated in the video. I recommend watching this video that takes you through the entire process:īut what if you own an inboard? Well, the intent of coating the engine is pretty much the same. You’ll also need to remove the spark plugs and spray the oil on the cylinders. I said it’s a great sign because that means you’re coating the parts of the engine that need to be coated (such as the ones mentioned above) since they’re prone to corrosion and rust.īut that’s just one step, though. As you continue spraying into the engine’s internal parts, the exhaust will start emitting smoke (which is a great sign!), hence, the term “fogging”. One of the initial steps in coating the engine involves starting and revving it up and then removing any filter your boat has. We can’t say the same for the other types of oils out there.Īre you curious as to why it’s termed “fogging”? We’ll have to look at the typical process of boat engine fogging to know why. Why? It’s made specifically to impart the protective benefits mentioned above.Fogging oil is designed to stick to the engine’s vital internal components and protect them for a long time. Whether you’re trying to fog a 4 stroke outboard or an inboard, there’s only one oil you need, and it’s fogging oil. What to Use to Fog an Outboard Boat? How Does It Work? After all, corrosion also thrives in highly humid areas and places close to saltwater in general. Fogging the engine every time you store an outboard motor applies to every climate, not just those with especially cold winter seasons.

By protecting your engine against this threat, you essentially prolong its life.The oil acts as a protective coat that shields your engine from damag.Did you know that not fogging outboard motor places it at risk of ceasing or failing to start altogether? You won’t have to worry about rust and corrosion problems plaguing your engine.

Winterizing mercury inboard boat motor