A6 / S6 (C5 Platform) Discussion Discussion forum for the C5 Audi A6 and S6 produced from 1998-2004

coolant tank not holding pressure...

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Old Apr 3, 2009 | 04:23 PM
  #11  
4Driver4's Avatar
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I doubt any or our cars run more than 7 psi.
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Old Apr 3, 2009 | 05:08 PM
  #12  
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Hmm, probably not, but it should be able to hold up to 15lb's.
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Old Jun 30, 2009 | 02:08 PM
  #13  
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A quick update...

Put some radiator sealer into the expansion tank and voila, no more leak!

After months of buying Audi coolant and being told that that was the only coolant that would work and months of buying dex-cool because it was a compatible coolant..the problem is solved.
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Old Jun 30, 2009 | 02:53 PM
  #14  
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Originally Posted by audiphobic1
A quick update...

Put some radiator sealer into the expansion tank and voila, no more leak!

After months of buying Audi coolant and being told that that was the only coolant that would work and months of buying dex-cool because it was a compatible coolant..the problem is solved.
like a bandaid on a gunshot
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