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Thread: Anyone used air con sealant?

  1. #1
    Regular Member marky2027's Avatar
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    Default Anyone used air con sealant?

    After having my air con re-gassed last week I have no discovered I have a leak somewhere as there was virtually no pressure in the system. When it was re-gassed it passed the leak test. My mate has DIY air con stuff so we topped it up yesterday and it maintained the pressure. I am presuming therefore I have a small leak somewhere. I was thinking about trying one of these sealants like this one http://www.ryanairconspares.com/supe...ir-p-6328.html Anyone got any experience of these? I really don't want to be spending any more money on this car as after my yearly jaunt to France this year I am getting rid

  2. #2
    Regular Member Handyandy-UK's Avatar
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    Vehicle : BMW 525i

    Trim : SE Touring

    Engine : 3.0

    Year : 2007

    Default

    If you're not planning to keep the vehicle you may as well save you money and just let it be.

    The whole subject of these 'DIY Death Kits' has been done to death on here in various threads, but the general opinion would seem to be to leave well alone. If a system is losing pressure, there is a fault. Filling with an un-measured quantity of a gas, dye, sealant mixture is unlikely to be a lot of help and at something like £45 a pop, a nice way to waste money.
    The only sensible options are a) have the system checked by a vehicle aircon specialist, or b) inspect the system yourself for obvious signs of damage (commonly the condenser), replace parts and have it pressure tested and regassed.

  3. #3
    Regular Member marky2027's Avatar
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    Default

    I just thought this might be a quick fix for my hols but obviously not eh?!

  4. #4
    Regular Member Handyandy-UK's Avatar
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    Vehicle : BMW 525i

    Trim : SE Touring

    Engine : 3.0

    Year : 2007

    Default

    More chance it would last 24-48 hrs and you'd be back where you started, minus the cost of the can.

  5. #5
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    Vehicle : Vauxhall Astra-J

    Trim : Elite

    Engine : 2.0 CDTi

    Year : 2013

    Default

    Quote Originally Posted by marky2027 View Post
    I just thought this might be a quick fix for my hols but obviously not eh?!
    Followed by an expensive a little bit later on.

    If these miracle cans really did their job, then there would be no need for AC specialists.

    Oh, btw, when you do eventually get it topped up professionally, mention to the guy that you used a DIY death kit as the contents can often screw up his expensive AC equipment when he recovers what's left in your system before replacing it.

  6. #6
    Regular Member JagRigger's Avatar
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    Vehicle : Vectra

    Trim : Design

    Engine : 1.8 VVT

    Year : 2007

    Mileage : lots !

    Default

    I agree with the comments above, and have been told by some air con engineers they would not touch my car if I had used it.

    That said, a few years ago I rebuilt the front of my Cavalier after a crunch, which took out the condensor. I then fitted a schraeder valve to a charge hose and put 80psi in the system using an auto start electric inflator. Waited 1/2 hour - no pressue drop, so then charged it from cans.

    Worked fine for the 18 months I kept the car - but I wasn't using the cans to seal a leak as such - just recharge.

  7. #7
    Regular Member marky2027's Avatar
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    Default

    Thanks for replies gents. I will keep away from these kits then.

  8. #8
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    Vehicle : Vauxhall Astra-J

    Trim : Elite

    Engine : 2.0 CDTi

    Year : 2013

    Default

    Basically, from what I've been told from an AC bloke about the 'sealant' is that it just swells the rubber seals. Hence a temp fix, if that. If any of the seals are perished or split, then swelling them out won't make any difference.

  9. #9
    Regular Member marky2027's Avatar
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    Default

    I'm going to see an air con specialist tonight. He said in his experience with vectras it will probably be the condenser. Will find out tonight

  10. #10
    Regular Member marky2027's Avatar
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    Default

    Update for you all. I have a bust condenser. He pressure tested it and found a leak straight away. Should have gone to him in the first place.

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