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  1. #1
    Chief Petty Officer Caveman Charlie's Avatar
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    Default Winterizing with pink RV antifreeze. How good is it?

    Well, winter came up on me kind unexpected.( Golly, who knew it would happen ever year. ) So I went out the other day before the first time it got down to 20 degrees and I drew/sucked pink RV antifreeze through my 1973 mercruiser 140.

    This is my second year of owning a boat. Last year I was very methodical about winterizing. I drew pink antifreeze from the bottom, then dumped green antifreeze in from the top, then pulled the hoses and drain plugs. I did this early on in the season.

    This year I got busy and waited. After all , Indian summer often comes and I thought I might a chance to take her out again.

    I've heard that the pink antifreeze will get slushy and still could have the potential to crack the engine.

    My question is: How long can I wait, how cold can it get, before I need to dump green in from the top and pull the drain plugs?

    After all , I might be able to take her out again! Can I wait for December to dump in green and pull the drain plugs? How about the lower end oil. I really doubt if there is any water in there. Can I wait a few more weeks before I drain and replace it?

    Sorry, if this is confusing. I'm not a very good typist/writer.

  2. #2
    Lieutenant RotaryRacer's Avatar
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    Air can't freeze.

    Just drain it and leave it dry. I usually drain all the water then just dump the pink stuff in for a little extra assurance.

    I think you are making it harder than you really need to.

  3. #3
    Petty Officer 3rd Class
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    I know you are not suppose to use the green stuff at all if you forget to take it out and get to the lake here it a a really steep fee thousands just use the pink stuff. and as far as air does not freeze that is crap you could pull all the drain plugs and let everything out and I would bet paycheck there is still water in there that can feeze and enough to crack the block. I learned that the hard way and hey it is ok to make alot out of this I think that not winterizing a boat is one of the most expensive mistakes boaters make it is also the least expensive maintence to do.

  4. #4
    Petty Officer 1st Class DRIFTER_016's Avatar
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    We use the pink stuff to winterize the drains in the fishing lodge I work for north of the arctic circle. Drain the block and pour some pink stuff in and you'll be fine. If it works at -70F in the arctic it will work where ever you are.

    As for the lower unit, pull the bottom plug and let a bit run out and replace the plug. If the oil is grey/whiteish you have water in there. Replace the oil now if this is the case or you will likely crack the LU. If it is brown/black/dark grey no water and you can wait.

  5. #5

    Default Winterizing questions

    I just bought my first cabin cruiser and for days I have been reading and learning about the many different systems in the boat, a Bayliner 2455. Previous owner kept antifreeze in the fresh water tank becuase he never used it. Is it safe to flush this tank with freah water, doing this severl time in hopes of ridding the tank of the toxic antifreeze, then use it on a cruise on a nearby lake.

    Its been a few years since anyone posted to this thread, so, this message may go without notice by anyone who is knowledgeable about cabin cruisers.

    If someone reads this, what is a safe antifreeze to use in the fresh water systems onboard?

  6. #6
    Lieutenant jaxnjil's Avatar
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    Default Re: Winterizing questions

    Quote Originally Posted by Paul Bud View Post
    I just bought my first cabin cruiser and for days I have been reading and learning about the many different systems in the boat, a Bayliner 2455. Previous owner kept antifreeze in the fresh water tank becuase he never used it. Is it safe to flush this tank with freah water, doing this severl time in hopes of ridding the tank of the toxic antifreeze, then use it on a cruise on a nearby lake.

    Its been a few years since anyone posted to this thread, so, this message may go without notice by anyone who is knowledgeable about cabin cruisers.

    If someone reads this, what is a safe antifreeze to use in the fresh water systems onboard?
    the same pink rv anti-freeze you use in a rv

    Women are Angels.

  7. #7
    Chief Petty Officer
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    Some RV antifreeze is OK to drink albeit not pleasant tasting. Check Camping World or even WalMart.
    http://www.campingworld.com/shopping...e-gallon/30243

  8. #8
    Supreme Mariner kenmyfam's Avatar
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    As far as I know it works just fine. Going to be using it in the trailer shortly. Have always used it at the cottage with no issues. Gets pretty cold up there too !!!
    Marada 2100 Executive Series, 5 Litre V8 with Mercruiser Alpha 1 outdrive. 2007 K-Z Spree 260 RBH, all = a whole lot of family fun !!!!

  9. #9
    Petty Officer 2nd Class Chris-R's Avatar
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    Default Re: Winterizing questions

    Quote Originally Posted by Paul Bud View Post
    I just bought my first cabin cruiser and for days I have been reading and learning about the many different systems in the boat, a Bayliner 2455. Previous owner kept antifreeze in the fresh water tank becuase he never used it. Is it safe to flush this tank with freah water, doing this severl time in hopes of ridding the tank of the toxic antifreeze, then use it on a cruise on a nearby lake.

    Its been a few years since anyone posted to this thread, so, this message may go without notice by anyone who is knowledgeable about cabin cruisers.

    If someone reads this, what is a safe antifreeze to use in the fresh water systems onboard?
    The pink RV antifreeze is what you want. We've used it for years in our motorhome and summer home on Cape Cod. It is non-toxic and made for potable water systems. Just take a look on the label and you will see that it says it is non-toxic. It's good down to at lest -45 or so. I've never had an issue even during the worst of New England winters.

  10. #10
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    If it gets cold enough, the pink stuff will slush but it won't expand. Expansion is what damages things.

  11. #11

    Default Re: Winterizing with pink RV antifreeze. How good is it?

    Well, I learned something here, "the pink antifreeze is safe and made for RV's". Thanks for the help.

  12. #12
    Petty Officer 2nd Class
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    FYI, if you don't care about the environment (face it, some don't), then you can use the green stuff. You can even reuse it providing you check its strength with the appropriate instruments.

  13. #13
    Moderator Bondo's Avatar
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    and as far as air does not freeze that is crap you could pull all the drain plugs and let everything out and I would bet paycheck there is still water in there that can feeze and enough to crack the block.
    Ayuh,... Now That's Bullship... I'll take yer Paycheck...
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  14. #14
    Lieutenant dockwrecker's Avatar
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    Six drain plugs out, lower hose off. No water left, no freezing, no worries.
    90 Carver Montego 21.5 (23') "Lady Minna" (yes a name change in honor of our fallen Labrador. Poseidon understands.)

    In the immortal words of Hunter S. Thompson:
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    and loudly proclaiming "Wow! What a Ride!"

  15. #15
    Admiral j_martin's Avatar
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    Quote Originally Posted by Paul Bud View Post
    Well, I learned something here, "the pink antifreeze is safe and made for RV's". Thanks for the help.
    Be aware, I have seen pink ethylene glycol anti-freeze. In fact, a friend of mine lost his kidneys because the handyman that winterized his cabin thought that all pink anti-freeze was safe.

    RV anti-freeze, and some automotive anti-freeze is based on propylene glycol, which is low enough in toxicity to be on the GRAS list. (Generally recognized as safe.) It is used in food. It is the reason home made ice cream is rock hard at freezer temps, and commercial ice cream is scoopable. It can be used as a nutrient. In cattle with digestive system trouble, it is used by the quart to keep blood sugar up and ketosis down without further compromising the digestive system with glucose. Getting Bessy to swallow the stuff is the hard part. (been there, done that.) (Warning, use medical grade propylene glycol for this, not RV anti-freeze.)

  16. #16
    Fleet Admiral Gary H NC's Avatar
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    The pink RV stuff still needs to be completely flushed out of any drinking water system. It may not kill you but it sure tastes nasty!

    When i flush my RV in the Spring the water will look milky for the first 50 gallons or so until all the antifreeze is out of the system.

    It may say non-toxic but i'm sure not trying it...


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  17. #17
    Senior Chief Petty Officer paulspaddle's Avatar
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    [QUOTE=

    It may say non-toxic but i'm sure not trying it...[/QUOTE]

    Right! Didn't doctors promote smoking in the 50's? Ah, the things we learn in time.
    1993 Larson 200 SEI
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  18. #18
    Petty Officer 2nd Class
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    This is going to be my first time winterizing my boat. I took the time to read all the steps and was ready to go. I purchased 3x 3.98 liter Polar plumbing antifreeze pink stuff from Canadian tire. Pumped my engine with it. Few days later I was taking the empty jugs to the garbage and realize it states for plastic pipes only. Had to make another trip to canadian tire and purchased -50 Polar plumbing antifreeze. On front side label it states that its ideal for RV, Boats, Pools, & cottages. For use with plastic or metal pipes, contains corrision inhibitors & non toxic.

    On the back side it says.....
    Freezing of the product is normal and will not damage equipment. This product is not designed as a heat transfer fluid for closed loop systems or as antifreeze for internal combusion engines.

    So does this mean that not recomended for on road vehicles and safe to use for my boat?

    http://www.canadiantire.ca/AST/brows....jsp?locale=en

  19. #19
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    do not run it in anything as a coolant is all to winterize is fine just drain it before use best of luck to ya
    18 bayliner capri
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    im just that good of tech hehe

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  20. #20
    Lieutenant DaNinja's Avatar
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    Quote Originally Posted by omcgreasemonkey View Post
    do not run it in anything as a coolant is all to winterize is fine just drain it before use best of luck to ya
    Yep, the Starcraft is full of the pink stuff. I wouldn't use it as a coolant in my truck's radiator, though.

    Low-Tox works well also, if you prefer green.
    1995 SeaRay BR200 5.0 Alpha I "Texas Belle"
    1999 Starcraft Aurora 2415 5.7 Alpha I "MO Belle"

  21. #21
    Petty Officer 1st Class 1stgenbird's Avatar
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    Here is the product info from Jamestown Distributors web. And yes, not to be used as a coolant, just for winterizing/storage purposes.

    Marine Antifreeze -50 F
    Safe. Odorless. Tasteless. This is an excellent antifreeze for marine or RV applications. Protects to 50 degrees below zero. No mixing required. Great for use as engine storage. Propylene Glycol formula makes this pink marine / boat / rv antifreeze non-toxic.

  22. #22
    Petty Officer 2nd Class
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    So could a person just fill the engine block with RV pink antifreeze and then just drain it and leave all the valves open during winter? I was thinking this way we pushed all the water out of the engine block and and this would reduce the chance of the antifreeze freezing up since I live in extreme winters in Canada

  23. #23
    Lieutenant DaNinja's Avatar
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    Quote Originally Posted by 2fast4u_evinrude View Post
    So could a person just fill the engine block with RV pink antifreeze and then just drain it and leave all the valves open during winter? I was thinking this way we pushed all the water out of the engine block and and this would reduce the chance of the antifreeze freezing up since I live in extreme winters in Canada
    I fogged the Starcraft on the muffs,
    Shut off and drained the water by pulling the plugs (overkill step),
    Re-installed plugs and filled with the pink stuff through the water hoses at the thermostat,
    Pulled the plugs and called it a season.
    1995 SeaRay BR200 5.0 Alpha I "Texas Belle"
    1999 Starcraft Aurora 2415 5.7 Alpha I "MO Belle"

  24. #24
    Petty Officer 2nd Class
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    Question Re: Winterizing with pink RV antifreeze. How good is it?

    BUMP. I have the exact same question though I know the answer and I would just like the peace of mind by confirmation. On my 4.3LX Mercruiser I pulled the block drain and manifold drains on both sides as well as the hoses. I then poured approx 4L of antifreeze in the block via the water pump hose as well as the manifolds via the top hoses. Unfortunately 4L seems not to be enough since I was able to pour all the water! What I wanted to do was fill all passages and then drain...

    Experts?



    Quote Originally Posted by 2fast4u_evinrude View Post
    So could a person just fill the engine block with RV pink antifreeze and then just drain it and leave all the valves open during winter? I was thinking this way we pushed all the water out of the engine block and and this would reduce the chance of the antifreeze freezing up since I live in extreme winters in Canada

  25. #25
    Chief Petty Officer Subliminal's Avatar
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    Default Re: Winterizing with pink RV antifreeze. How good is it?

    I had heard that there might be areas in my motor that don't drain so easily...so I pulled the plugs and used a few gallons of the pinks stuff to flush through everything...that way if I messed up, at least its no longer water in the engine. I left the plugs out, too.

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