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  1. #1

    Join Date
    Jan 2003
    Posts
    46
    Location
    New Zealand
    Tractor
    IH 574

    Default Radiator "Stop Leak" products

    I took the radiator off my tractor today and took it to be repaired, the neck had developed a crack where it joins onto the tank. The guy repaired it ok but then pressure tested it and there was a leak coming from inside the top of the core. He told me it needs to be re-cored @ $400!! I said no way can you patch it up? He says no caus it will end up being damaged further by the heat used while repairing it. He didn't charge me for the work that he had done (It was in his shop for 3 hours) so I was happy bout that.

    Anyway, I went to the local auto shop and bought some radiator leak repair stuff. I got two kinds, a liquid one, and a powdered one which is actually a synthetic solder that melts in the heat of the water, and cools instantly when it reaches the air of the leak (or so the pack says..).

    So, I thought I would ask if anyone out there has had any experiance using this type of product?
    From reading the side of the tin it sounds like it will work just fine so heres hoping [img]/forums/images/graemlins/confused.gif[/img]

  2. #2
    Super Star Member Egon's Avatar
    Join Date
    Aug 2001
    Posts
    17,921
    Location
    Nova Scotia, Canada

    Default Re: Radiator "Stop Leak" products

    I've used some of the Leak stop products for minor fitting leaks and for water pump lubrication. Think it helped.

    For a core it's a little different. Can't hurt to try it but keep close watch and start saving for a core replacement. Sometime the leaky tube can be pinched off on either side of the leak but I've not done this for many a year. You may also be able to reach the leak with a soder gun and repair from outside. I've also done this.

    Egon

  3. #3
    Veteran Member
    Join Date
    Jun 2003
    Posts
    1,649
    Location
    Northern, New York
    Tractor
    Kubota L3830 03: RTV 900

    Default Re: Radiator "Stop Leak" products

    I have found that the kind called "Bar-Leaks" works the best.

  4. #4
    Super Member
    Join Date
    Oct 2003
    Posts
    7,345
    Location
    Northeast, Ohio
    Tractor
    TC-40D SS New Holland

    Default Re: Radiator "Stop Leak" products

    I think I might get an estimate or two to re-core that old radiator from a different shop. Here in Ohio we have many, and the prices vary widely. My last tractor was recored twice because the radiator was flexing and the hoses weren't. I finally installed a brace from the top of the radiator to the engine block to eliminate the problem. As I remember the cost each time for the repair was about $150.00

  5. #5
    Bronze Member
    Join Date
    Feb 2004
    Posts
    57
    Location
    braselton,ga
    Tractor
    mahindra 4500

    Default Re: Radiator "Stop Leak" products

    IH 4 me,i have been a diesel mechanic for 24 years and i can say that the "stop leak" type products are good, IF,you are stranded on the side of the road.but,for a permenent repair have it recored.these products will clog up more than the hole that is leaking!!

  6. #6

    Join Date
    Aug 2001
    Posts
    542
    Location
    Campbellville, Ontario
    Tractor
    Kubota L3010, BX2200

    Default Re: Radiator "Stop Leak" products

    I've found most stop leak type products, whether for rads or anything else, are pretty useless, except the make the inevitable repair a bit harder.

    $400 seems like a lot of money to recore a rad, I'd ask around.

  7. #7

    Join Date
    Jan 2003
    Posts
    46
    Location
    New Zealand
    Tractor
    IH 574

    Default Re: Radiator "Stop Leak" products

    This is what it says on the bottle...

    RADweld
    Permanantly seals leaks in radiators and stops rust forming....FAST

    Time will tell if this statement is true or not.. [img]/forums/images/graemlins/smile.gif[/img]

  8. #8
    Super Member California's Avatar
    Join Date
    Jan 2004
    Posts
    5,856
    Location
    Sonoma County
    Tractor
    Yanmar YM240, YM186D, and another YM186D

    Default Re: Radiator "Stop Leak" products

    Apparently RadWeld is good enough that Subaru is using it on their head gasket recall campaign.

    "As a precautionary measure, SUBARU OF AMERICA, INC. is recommending that a special conditioner be added to the engine cooling system of certain 1999 through 2002 model year Subaru vehicles equipped with 2.5 liter engines. This recommendation, which applies to your Subaru vehicle, is made to prevent a possible external coolant leak at your vehicle’s engine cylinder head gaskets."

    See the three posts starting Here.


  9. #9

    Join Date
    Jan 2003
    Posts
    46
    Location
    New Zealand
    Tractor
    IH 574

    Default Re: Radiator "Stop Leak" products

    Well thats good to know because as it happens I also own a Subaru WRX STi [img]/forums/images/graemlins/smile.gif[/img] No coolant leaks though..

  10. #10

    Join Date
    Aug 2002
    Posts
    7,386
    Location
    North East CT
    Tractor
    2003 Kubota BX-22

    Default Re: Radiator "Stop Leak" products

    </font><font color="blue" class="small">( Apparently RadWeld is good enough that Subaru is using it on their head gasket recall campaign.

    "As a precautionary measure, SUBARU OF AMERICA, INC. is recommending that a special conditioner be added to the engine cooling system of certain 1999 through 2002 model year Subaru vehicles equipped with 2.5 liter engines. This recommendation, which applies to your Subaru vehicle, is made to prevent a possible external coolant leak at your vehicle’s engine cylinder head gaskets."

    See the three posts starting Here. )</font>

    I just love it when a car manufacturer suggests using a "remedy" product to repair a defect in the manufacturing process. If I owned a Subaru, I wouldn't use it because if the gasket leaks, then it should be replaced. Stop leak products are a temporary fix at best. What you are putting into the system is a product that will "gum up" the leak area and stop it. It is a band aid method of repair. I have used it when necessary, but a permanent repair is needed. If the radiator is shot, then the block will also need to be cleaned internally. If you install a "stop leak" product, you definitely will need to remove it before the new radiator is installed. If you were doing anti freeze changes on a regular basis, then the radiator might still be good. What happens, is the anti freeze product will deteriorate and it in turn will start to attack the metal of the radiator. Usually, the only other time a radiator will go bad is if it is constantly subjected to salt spray during the winter or flexing as described above.

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