How to winterize an inboard boat?

How do you winterize inboard boat?

How To Winterize an Inboard Boat

  1. Warm the Engine to Winterize Inboard Boat. …
  2. Fill the Tank to Winterize Your Inboard Boat. …
  3. Add Antifreeze to Winterize Your Inboard Boat. …
  4. Spray the Engine with Fogging Oil. …
  5. Winterize Your Boat with an Oil Change. …
  6. Clean & Spot Check Everything. …
  7. Store Your Boat with SecurCare Self Storage.

How much antifreeze Do I need to winterize my inboard boat?

To winterize the engine with antifreeze, you’ll need a five-gallon bucket, and enough antifreeze for your engine and related plumbing (at least two gallons). If your engine takes a lot of antifreeze, you might also need a helper to add antifreeze to the bucket as needed.

How do you put antifreeze in an inboard motor?


How do you winterize a Mercruiser inboard outboard?


Do inboard boats need to be winterized?

If you’ve got an inboard or a sterndrive (inboard/outboard) boat motor, then winterizing is an absolute must-do. This process prevents gunk from building up, keeps condensation out of the fuel tank and just overall keeps your engine healthy.

Can I use car antifreeze to winterize my boat?

In contrast, auto antifreeze is designed to be used both as antifreeze and coolant for your car engine and can be extremely toxic and environmentally damaging. Car antifreeze should never be used in a boat engine.

Can you use regular antifreeze to winterize boat?


What kind of antifreeze do you use to winterize a boat motor?

West Marine propylene glycol antifreeze

Non-toxic West Marine propylene glycol antifreeze is recommended for winterizing potable water systems and all engines.

Can I use RV antifreeze in my boat engine?

Can you use RV Antifreeze to winterize a boat? RV antifreeze and marine antifreeze are chemically the same. For most parts of winterizing your boat, RV antifreeze can absolutely do the job for a boat.

What kind of antifreeze goes in MerCruiser?

Answer: MerCruiser requires the use of propylene glycol antifreeze (with a rust inhibitor for marine engines) in the seawater section of the cooling system.

How cold does it have to be before winterizing a boat?

As a general rule, you should look to winterize your boat before the temperatures drop below 25 degrees Fahrenheit, approximately -3 degrees Celsius.

How long does it take a boat engine to freeze?

At what temperature will a boat engine 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.

How much does it cost to de winterize a boat?

The cost to dewinterize is affordable, considering the amount of time and energy you’ll save. The average price is around $300, but of course, it varies, mainly on the size of the vessel. If you have a single outboard motor, it’ll be around $100. A larger cabin cruiser could cost upward of $500-$600, and possibly more.

Should you leave antifreeze boat engine?

Do you have to use antifreeze when you winterize your boat? You should use antifreeze to winterize your boat if you have an inboard engine or any systems with pipes or that carry water. You should also consider using it in your bilge. For outboard motors, you don’t have to use antifreeze.

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