How To Deal with A Cracked Plastic Radiator For Totally free (Hopefully)

How to repair a crack in a plastic car or truck radiator with widespread applications. This repair took me about an hour, and will with any luck , be a long lasting correct and get rid of the leak.

Categories: Car


  1. Hernaldo Rios
    Hernaldo Rios 17 June, 2016, 06:09

    there radiator shops people, let the professionals do it

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  2. Marcus Berry
    Marcus Berry 17 June, 2016, 06:09

    How to fix a Hyundai Elantra radiator transmission lines that has been bye pass on replacement one

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  3. M Zimmer
    M Zimmer 17 June, 2016, 06:09

    Hi Just saw this video..i see it was published May 2014…Would you please tel the status on radiator..? how long it lasted…?? and how many miles …??

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  4. Rebel Dog Productions
    Rebel Dog Productions 17 June, 2016, 06:09

    prolly not good if you haul with your truck but great plastic welding video for sure.

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  5. Robert Wetzel
    Robert Wetzel 17 June, 2016, 06:09

    best place to get a new radiator,got one for 48.oo shipped for a 1999 pontiac montana, at sunbelt radiator no shipping mine in 12 hrs.

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  6. Simon Uribe-Convers
    Simon Uribe-Convers 17 June, 2016, 06:09

    Great video—very informative, well made, and with very clear explanations. Thank you!

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  7. itillbeme1
    itillbeme1 17 June, 2016, 06:09

    The object here was to $ave money, and repair a plastic radiator leak yourself. Zero money was spent and drove 50 miles without leaks or refill. Mission accomplished.

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  8. lewstone1934
    lewstone1934 17 June, 2016, 06:09

    dude.. this radiator is completely shot, and will blow up when you are stuck in a major road block on Christmas Eve – or trying to get away from the mother of all twisters. Take my advice – replace it – and do that now!

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  9. zhq1995
    zhq1995 17 June, 2016, 06:09

    hey garage ,Plz tell me whether the methods you use 100% secure

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  10. zhq1995
    zhq1995 17 June, 2016, 06:09

    hey, garage, Im a chinese radiator repairman, if radiator crack like u vid, i will change this part ,or make a Aluminum cap use TIG welding aluminum WSME 315, 100%safe

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  11. Joshua Ost
    Joshua Ost 17 June, 2016, 06:09

    nice gas can below the torch

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  12. John Ferguson
    John Ferguson 17 June, 2016, 06:09

    First try the scrap yard. Frequently, other owners installed a new radiator that didn't wear out before the car was crashed or scrapped. I have to say that it's pretty dumb to risk seizing an engine or warping the head just to save a few bucks. The radiator will soon fail at the seam anyway.

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  13. chookvalve
    chookvalve 17 June, 2016, 06:09

    Good effort mate. Great for a short term repair.

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  14. Jim Haas
    Jim Haas 17 June, 2016, 06:09

    I have an '03 Dodge Ram that is spewing coolant where there is a very small crack located right at the base of plastic neck on the top of the reservoir (where the cap is screwed on). I really like your suggestion to cut a small piece of the same plastic to use as a bond. If your fix on the radiator itself is withstanding the heat, I assume that the reservoir should be okay. I'm really trying to just do some "first-aid" here. Thanks!

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  15. David
    David 17 June, 2016, 06:09

    I've got to ask because…quite simply this seems like the most ridiculous bush fix I've ever seen. Why not just use some High-temp RTV or something like that? The stuff is rated for over 500 degrees, and is actually meant to SEAL things. It is intended to bond to plastic as opposed to the now structurally compromised pieces of plastic you used. I mean maybe if I was stranded on the side of the road I could see taking a lighter or the cigarette lighter from the car to help seal a crack, but this seems kind of absurd…particularly since there are better options available if you were going to try to do this kind of "repair" to begin with.

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  16. Rolando Torrico
    Rolando Torrico 17 June, 2016, 06:09

    Not only a great radiator repair video, but also a human mind in action. Love mission impossible projects too!

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  17. Los Man
    Los Man 17 June, 2016, 06:09

    Great vid man! I will try it with my ford escape since it suddenly started leaking. I would buy a new radiador but i am broke right now, lol. (Where there is a need there is a way). :-)

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  18. frank z
    frank z 17 June, 2016, 06:09

    did it work

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  19. Thor Mcgee
    Thor Mcgee 17 June, 2016, 06:09

    Use Loctite Epoxy Weld compound and a piece of automotive body repair fiberglass cloth. DON'T USE JB WELD. JB Weld is not antifreeze resistant.
    Rough sand the area to be patched, then clean with brake cleaner. Soak the cloth in Loctite Epoxy Weld, smear some Loctite on the radiator then apply the Loctite soaked fiberglass. It will be a lasting repair. This repair works well for cracked steel and aluminum on engines and transmissions also.

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  20. basant vimal Sharma
    basant vimal Sharma 17 June, 2016, 06:09

    Best thing is marine epoxy steel it comes in 2parts just like bondo and it drips like condensed milk but it is the best apply a thick layer ,you have to wait hours for it to dry and then tilt the radiator which ever way you want to apply the glue to the other part of the leak this is the best fix patch a large area its better than plastic weld

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  21. Life New
    Life New 17 June, 2016, 06:09

    that old beat up radiator–dude if you dont replace that crap

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  22. joe dirt
    joe dirt 17 June, 2016, 06:09

    good video.
    thanks for posting

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  23. Abraham Levy
    Abraham Levy 17 June, 2016, 06:09

    Do you think this procedure could repair radiator hose neck, breaking completely off of radiator tank?

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  24. Washington Redskin
    Washington Redskin 17 June, 2016, 06:09

    I wonder how Billy May's Mighty Putty would do. I also wonder what it would be like to make a 3d printed one, using the same original plastic ground up and recycled.

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  25. DarkBioCloud
    DarkBioCloud 17 June, 2016, 06:09

    Anyone else notice the bug at 12:30 ?

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  26. TheRevClyde
    TheRevClyde 17 June, 2016, 06:09

    you keep doubting the success of your repair, and to me it seems your basing that on the longevity of it. that's really not the way you should be looking at it. most people do a repair of this nature to get them by till they can afford a new part. radiators are upwards of $200 not including labor cost. now I know by your statements early in the vid, that its not your reason for doin this. you need to look at the success of the repair like this……. does it still leak? has it stayed fixed long enough to have saved or earned the money to buy a new part? if 1 is no and 2 is yes, congrats its a success. chances are the tubes will fail before your repair does

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  27. Danilo Baca
    Danilo Baca 17 June, 2016, 06:09

    while I was seeing this video I was doing it with my expansion tank bmw e39 leak, I hope work with mine, coz bmw are very hot, soon I'll show the video if it work

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  28. Freda Yourself
    Freda Yourself 17 June, 2016, 06:09

    thanks for sharing my son in law broke mine and I wanted to see if something would work to put it back together

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  29. Claude “Reviews4U” Rains
    Claude “Reviews4U” Rains 17 June, 2016, 06:09

    The reason most repairs fail is they don't drill the ends first. That way it stops it from going any further. Then you have to use something that can take expansion and contraction. So it can't be some super hard epoxy as it has to be flexible. Just clean the surface real good and make sure no water or anti-freeze is still present. It has to be clean, dry and rough. Use 80 grit sand paper of a file. Then wipe with acid tone once more. Let it dry and seal over with flexible epoxy. 

    It will last a very long time then.

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  30. Zach Hart22
    Zach Hart22 17 June, 2016, 06:09

    Great video; is the repair still holding? I was thinking about adding P-tex snow ski repair as a filler; but plastic from the radiator might be better. Or plastic from the radiator reinforced with P-tex.


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  31. Stephanie Owens
    Stephanie Owens 17 June, 2016, 06:09

    Is this still holding up?

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  32. thepoopsoup
    thepoopsoup 17 June, 2016, 06:09

    Should have left it alone and left the rad cap loose No pressure no leak!

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  33. icu469
    icu469 17 June, 2016, 06:09

    Dude just buy a new radiator. Cant believe your repair hold in the long term.

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  34. komer west
    komer west 17 June, 2016, 06:09

    Hold on sparky. Is that a red gas can right next to your feet ? Why yes it is and look at you press your luck with the gas torch.  As we say down south. WELL BLESS YOUR HEART. Polite way of calling you a dumb butt.

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