How do you winterize an inboard boat engine?

Do you need to put antifreeze in an inboard motor?

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.

How do you winterize a Mercruiser inboard outboard?

How to Fully Winterize Inboard Boat Motors in 4 Steps

  1. Prepare Your Inboard Boat Motor for Winterizing. Fill the tank with gas. …
  2. Add Antifreeze and Spraying Fogging Oils. …
  3. Change the Engine’s Oil and Replace Oil Filter. …
  4. Do a Final Inspection.

How much does it cost to winterize an inboard boat?

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

How do you winterize a boat motor without starting it?

I fill up the cooling system with anti-freeze and change the plugs and fog each cylinder indivdually. Also pull the drive and grease the u-joints and change the oil including the bottle. Then i spray everthing down with wd-40. Put some dryer sheets around in the boat and some containers with charcoal in it.

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At what temperature should you winterize your boat?

As soon as the weather gets below 32 degrees, water begins to freeze, with water with impurities or saltwater in it starting to freeze at 28 degrees. In most cases, the water will not freeze solid (leading to cracked engine blocks) until the temperatures stay below 32 for several days and nights.

How do I winterize my boat myself?

How To Winterize Your Boat

  1. Step 1: Replace engine oil. …
  2. Step 2: Flush and drain cooling water. …
  3. Step 3: Stabilize fuel. …
  4. Step 4: Protect internal engine components. …
  5. Step 5: Replace gear oil. …
  6. Step 6: Grease and lubricate. …
  7. Step 7: Remove valuables. …
  8. Step 8: Clean and wax.

How do you run antifreeze through an inboard?

Remove the raw water intake hose from the seacock (this is sometimes difficult, as hose clamps and hoses may be mechanically frozen in place) and insert the end into the antifreeze in the bucket. Start the engine and run at idle until antifreeze discharges from the exhaust outlet for 30 seconds or more.

How does an inboard outboard cooling system work?

Most marine inboard engines are fresh water cooled. Much like your car, a captive amount of freshwater (coolant) is continually circulated through a heat exchanger that maintains the engine at a temperature set by the thermostat. … The solution is to utilize the relatively cool seawater, described as raw water.