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  1. #1

    Default 4.5L 200hp winterizing

    Looking for help on proper way to drain 4.5l engine and how to fill with antifreeze

  2. #2
    Join Date
    Mar 2009
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    Portland, Oregon,
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    11,246

    Default Re: 4.5L 200hp winterizing

    If equipped, use caution with the single point drain systems. These do not allow us to probe the openings as to clear any rust scale from the ports.

    Understand that just plain ole Air will not freeze expand and crack our expensive cast iron components.
    In other words, don't get too excited about adding anti-freeze to the cooling jackets/passages.
    The risk is dilution in the event that not all seawater was drained.
    If you do add anti-freeze, I would suggest that you drain it again afterwards.
    Rick ... aka Ricardo..... AQ series Volvo Penta repair
    Portland, Oregon
    28' SDN F/B w/ twin Volvo Penta 5.7L DP drives

    "Intellectual growth should commence at birth and cease only at death." Albert Einstein

    Please... no PMs! Post your questions on the forum.

  3. #3
    Join Date
    Sep 2003
    Location
    New Tripoli, PA, USA!
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    16,277

    Default Re: 4.5L 200hp winterizing

    Iron plus moisture plus air equals rust.

    Iron protected by anti freeze that excludes air prevents rust.

    Your choice.

    Jeff

  4. #4

    Default Re: 4.5L 200hp winterizing

    Thanks for the info. Can I pour the anti freeze in the opening where I removed the upper blue “vent” plug on the single point drain system?? Also, in your opinion, does the single point drain system get all the water out if I ensure the boat is level on the trailer??

  5. #5
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    Mar 2009
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    Default Re: 4.5L 200hp winterizing

    Jeff, I think that people tend to make more out of this than need be.
    Here's my take on this:

    Keep in mind that during the boating season, no anti-freeze is in the raw water cooling system.... just plain ole oxygen laden, rust and corrosion causing seawater!

    The amount of rust scale that can occur during the lay up period (cooling jackets dry) is paled by comparison to that of which occurs during the boating season.

    And if an owner makes one mistake regarding dilution..... they are crying the blues come spring time! It happens every year!

    Also, say a big NO to these:

    Click image for larger version. 

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    Last edited by RicardoMarine; 09-15-2019 at 08:57 AM.
    Rick ... aka Ricardo..... AQ series Volvo Penta repair
    Portland, Oregon
    28' SDN F/B w/ twin Volvo Penta 5.7L DP drives

    "Intellectual growth should commence at birth and cease only at death." Albert Einstein

    Please... no PMs! Post your questions on the forum.

  6. #6
    Join Date
    Mar 2009
    Location
    Portland, Oregon,
    Posts
    11,246

    Default Re: 4.5L 200hp winterizing

    ................
    Quote Originally Posted by catbeau View Post
    Thanks for the info. Can I pour the anti freeze in the opening where I removed the upper blue “vent” plug on the single point drain system??
    Post a few pictures of your system.
    In general, for those who are doing this, they are most likely introducing the anti-freeze via the thermostat housing.

    If you are absolutely certain that ALL Seawater has been drained, then your anti-freeze protection will very likely be OK.

    Also, in your opinion, does the single point drain system get all the water out if I ensure the boat is level on the trailer??
    Read what you can regarding complaints about the single point drain systems, then make your own decision.
    For me...... I would remove that silly system!
    Rick ... aka Ricardo..... AQ series Volvo Penta repair
    Portland, Oregon
    28' SDN F/B w/ twin Volvo Penta 5.7L DP drives

    "Intellectual growth should commence at birth and cease only at death." Albert Einstein

    Please... no PMs! Post your questions on the forum.

  7. #7
    Join Date
    Sep 2010
    Location
    Jersey Shore
    Posts
    5,617

    Default Re: 4.5L 200hp winterizing

    Jeff,

    If you are not sure how to do this, pay a pro to do it for you. Replacing a 4.5 engine will be very expensive. The exhaust manifolds alone are $$$.

    Is your engine Fresh water cooled or Raw water cooled?


    Do not leave your engine empty without antifreeze. Post #3 is accurate for a raw water cooled engine. There is always water sitting somewhere and you will have damage if you do not use antifreeze.
    Last edited by Docksidemarineservices; 09-15-2019 at 09:43 AM.
    Chris
    Dockside Marine Services
    Jersey Shore.
    Mercruiser/Mercury Certified
    Let the insanity begin.

  8. #8
    Join Date
    Mar 2009
    Location
    Portland, Oregon,
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    Default Re: 4.5L 200hp winterizing

    Add anti-freeze to your Raw Water Cooled engine if it gives you that "feel good" feeling.
    Note that Anti-freeze may become diluted by any residual seawater.
    If you drain it again afterwards, you will ensure that you weren't left with any pocket area dilution!

    As said.... just plain ole AIR will not freeze expand and crack our expensive cast iron components!
    Never has.... and never will!
    Rick ... aka Ricardo..... AQ series Volvo Penta repair
    Portland, Oregon
    28' SDN F/B w/ twin Volvo Penta 5.7L DP drives

    "Intellectual growth should commence at birth and cease only at death." Albert Einstein

    Please... no PMs! Post your questions on the forum.

  9. #9
    Join Date
    Sep 2010
    Location
    Jersey Shore
    Posts
    5,617

    Default Re: 4.5L 200hp winterizing

    Quote Originally Posted by RicardoMarine View Post
    Add anti-freeze to your Raw Water Cooled engine if it gives you that "feel good" feeling.
    Note that Anti-freeze may become diluted by any residual seawater.
    If you drain it again afterwards, you will ensure that you weren't left with any pocket area dilution!

    As said.... just plain ole AIR will not freeze expand and crack our expensive cast iron components!
    Never has.... and never will!
    A little dilution is better than straight water any day, especially in the fuel cool system.
    Chris
    Dockside Marine Services
    Jersey Shore.
    Mercruiser/Mercury Certified
    Let the insanity begin.

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