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  1. #1
    Redrum's Avatar
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    Changing coolant MSX 150

    Hello,

    So when I bought the ski it looks like someone put the green antifreeze in the coolant loop. I want to switch it back to the safe pink propylene glycol. Does anyone have any suggestions on how to do this effectively? Any help in the matter would be greatly appreciated.

    Thank you


  2. #2

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    if you what to change back over to dexcool you will have flush system with fresh water and then dexcool DO NOT MIX BOTH

  3. #3
    Redrum's Avatar
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    Yea I was planning on doing that, but what I was mainly asking is whe is the best place to drain the coolant from and where is the best place to add water to flush the system out from?

    Thanks.

  4. #4
    I believe the manual says to disconnect the lower hose of the coolant bottle and drop it to the bottom of the hull and let it drain out the back. Then you would either refill with green coolant or refill with water a couple time to flush it out.

  5. #5
    Quote Originally Posted by Redrum View Post
    Yea I was planning on doing that, but what I was mainly asking is whe is the best place to drain the coolant from and where is the best place to add water to flush the system out from?

    Thanks.
    Heres the instructions from the service manual

    Engine Coolant Change Procedure
    1. Remove the hose that connects the coolant expansion
    tank the water pump cover. The engine coolant will
    drain into the engine compartment bilge.
    2. Re--attach the hose. Open the two hull bilge plugs.
    Place two containers directly under the bilge plugs.
    3. Carefully lift the front of the boat to about 15 degrees
    up. Allow all of the coolant to exit the engine
    compartment.
    4. Flush the bilge with clean water, and secure bilge
    plugs.
    5. Obtain new engine coolant, and slowly fill the
    expansion tank to theMAX mark. Allow the system to
    purge the air out of the circuits. (Level will go down
    over short period of time.)
    6. Repeat process two to three times. Never fill level
    above MAX mark.
    NOTE: The coolant level will drop after the first several operation cycles.

  6. #6
    Matrix 4-Tec spannerspencer's Avatar
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    change as above. a tip for draining is to release the oil tank clamp, so you can unscrew the two bolts and remove the coolant expansion tank (this can help to get at hose at the bottom of the coolant tank.

    i then undo the top hose on coolant tank, blow threw it first, then flush water threw the small pipe (low pressure).

    make sure you rinse inside hull.

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