Do you have to winterize a 4 stroke Mercury outboard motor?

Like inboards and sterndrives, outboard engines are also subject to potential damage from freezing and from being laid up in disuse for months at a time. So outboards demand winterizing too.

Do you need to fog a 4 stroke outboard motor?

4 strokes do not need “fogging” because pretty much all the moving parts are already coated with crankcase oil. In fact,fogging a 4 stroke does not even reach or have any effect on 99% of the moving parts in a 4 stroke.

Do outboards need to be winterized?

If you want your engine to start in the spring and last you many years and plan on not using your engine all winter, you do have to winterize an outboard motor. Winterizing the engine helps to prevent damage during disuse, which is the chief cause for engine failure. Failing to winterize may lead to complications.

What happens if you don’t winterize your outboard motor?

If You Don’t Winterize Your Boat, Here’s What Happens: Water freezes and expands and can damage anything it’s trapped inside. Water may seep into unprotected spaces to do this. Acidic and corrosive wastes, salt and corrosion buildup can damage delicate parts in engines. Fuels break down or grow dirty.

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Is fogging an outboard motor Necessary?

Fogging a boat engine is not completely necessary but is highly recommended. Putting a stabilizer in your gasoline can help reduce the long-term storage issues but is not a guarantee. Essentially, fogging oil is an inexpensive way to better protect your boat engine while it’s left idle.

How do you winterize a boat with an outboard motor?

Winterizing Your Outboard Motor

  1. Drain the crankcase oil (Four-stroke motors)
  2. Install a new oil filter (Four-stroke motors)
  3. Filling the crankcase with new oil (Four-stroke motors)
  4. Changing the lower unit gear oil.
  5. Stabilizing the fuel.
  6. Flushing the outboard with antifreeze.
  7. Fogging the cylinders.

How do you store an outboard motor for the winter?

The best way is to either leave the motor on the boat or on an engine stand in an upright position, not tilted. If neither of these are an option, try to make sure that the engine is in an upright, self-draining position. If you can’t do this, be sure that the cooling system is drained completely.

Will an outboard motor freeze?

A very popular question asked by a concerned boat owner, (mainly outboard motorboats) is Will A Boat Motor Freeze? The simple answer is yes. If the temperature is low enough, it can freeze. Water, oil and other engine related lubrication coupled with freezing temperatures is the main culprit for freezing a boat motor.

Is it necessary to winterize boat?

Boats kept ashore must be winterized, and it must be done earlier than if they were in the water because dropping temperatures will affect them sooner. Wherever you end up keeping your boat, if you do not plan to use it for a month or more, you need to winterize it.

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Should you leave your outboard up or down?

It’s best to tilt your outboard up when leaving your boat in the water to prevent marine growth from forming and from corrosion eating away at its metal parts.

How much does it cost to winterize an outboard motor?

If you bring your boat to a shop to have it winterized, you can expect to pay between $300 and $400.

At what temperature will a boat motor freeze?

Unwinterized boat engines can freeze any time the air temperature is below 28°F (-2°C) – for an extended period. Freshwater cooled engines without proper coolant can freeze below 32°F (0°C). The good news is you can prevent freeze damage fairly easily.