Winterizing Your Outboard? You NEED to Know How to Fog It.

31 May 2024

So, you're putting your boat to bed for the winter. You've drained the lower unit, maybe even stabilized the fuel. But have you thought about your outboard’s delicate internal bits? They need some TLC too. That's where fogging comes in. Ignoring this crucial step can lead to a world of hurt (and expensive repairs) come spring.

Fogging an outboard motor involves spraying a special oil into the engine's intake while it's running. This protective coating safeguards internal components against corrosion during storage, especially during cold winter months. Think of it like applying lotion to your skin in dry weather – it prevents cracking and keeps things running smoothly.

The practice likely originated with the rise of recreational boating and the need to protect engines during off-seasons. Before readily available fogging oils, people used heavier oils, sometimes even marvel mystery oil, which weren't always ideal. Today, dedicated fogging oils are formulated to provide optimal protection without gumming up the works.

Why is fogging so vital? Because internal engine components are vulnerable to rust and corrosion from moisture that accumulates during storage. This is especially true in areas with high humidity or freezing temperatures. Without that protective layer of fogging oil, you risk pitting, corrosion, and ultimately, a hefty repair bill. And nobody wants that.

So, are you ready to learn the secrets of successful outboard winterization? Let's dive into the nitty-gritty of how to fog an outboard motor.

Essentially, you connect a fogging oil spray can to your engine's air intake. Run the engine, then spray the oil in short bursts until the exhaust emits a thick, white smoke. This indicates that the oil has coated all the internal surfaces. Simple enough, right? But the devil's in the details, as they say.

Benefit 1: Corrosion Protection - Fogging oil creates a barrier against rust and corrosion, extending the life of your engine.

Benefit 2: Easy Start-Up - A properly fogged engine starts easier in the spring, eliminating frustrating delays and potential damage from dry starts.

Benefit 3: Cost Savings - By preventing corrosion, fogging saves you money on costly repairs and replacements down the line.

Step-by-Step Fogging Guide:

1. Warm up the engine.

2. Connect the fogging oil spray can to the air intake.

3. Start spraying the oil in short bursts while the engine runs.

4. Continue spraying until thick white smoke comes from the exhaust.

5. Turn off the engine.

Fogging Checklist:

☐ Fogging oil

☐ Engine warmed up

☐ Spray nozzle attached

☐ Thick white smoke observed

Advantages and Disadvantages of Fogging

Advantages	Disadvantages
Protects against corrosion	Can be messy
Ensures easy starting	Potential for over-fogging
Extends engine life

Best Practices:

1. Use the correct fogging oil: Don't substitute with other oils.

2. Warm up the engine: This helps the oil distribute properly.

3. Short bursts: Avoid continuous spraying.

4. Observe the smoke: Ensure thick white smoke emerges.

5. Follow manufacturer instructions: Consult your owner's manual.

Real Examples (These are illustrative and should not replace specific manufacturer instructions):

Example 1: Fogging a small outboard on a fishing boat.

Example 2: Fogging a larger outboard on a pontoon boat.

Example 3: Fogging an inboard/outboard engine.

Example 4: Fogging a two-stroke outboard.

Example 5: Fogging a four-stroke outboard.

Challenges and Solutions:

1. Engine won't start: Check fuel and spark.

2. No white smoke: Verify correct fogging procedure.

3. Too much smoke: Reduce spraying.

4. Fogging oil leaks: Check connections.

5. Difficulty accessing air intake: Consult your manual.

FAQ:

1. How often should I fog my outboard? Annually, before winter storage.

2. What type of oil should I use for fogging? Use a dedicated fogging oil.

3. Can I fog my inboard engine? Consult your owner’s manual.

4. How long should I fog the engine? Until thick white smoke appears.

5. What happens if I don’t fog my outboard? Risk of corrosion and starting issues.

6. Can I use WD-40 instead of fogging oil? No, use dedicated fogging oil.

7. How do I store my outboard after fogging? In a dry, well-ventilated area.

8. When should I defog my engine? In the spring before the first use.

Tips and Tricks:

Use a fogging adapter for easier application.

Consider stabilizing your fuel as well.

In conclusion, fogging your outboard motor is a crucial part of winterizing your boat. This simple procedure protects your engine from corrosion, ensures a smooth start in the spring, and saves you money on repairs. By following the steps outlined above and paying attention to best practices, you can keep your outboard running smoothly for years to come. Don't let a little neglect turn into a major headache. Take the time to fog your outboard properly and enjoy worry-free boating next season. Your engine (and your wallet) will thank you for it. Remember, preventative maintenance is always cheaper than a repair bill. So grab a can of fogging oil and give your outboard the love it deserves. Now you’re ready to hit the water with confidence next season! Don't wait until it's too late. Protect your investment and make fogging a part of your annual boat winterization routine. Your future self will be glad you did.

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