kentmclean at kentmclean at
Thu Aug 7 07:04:26 PDT 2008

michael wrote:
> My guess is that the copper washer fails after some  
> time and a very small leak occurs (2 reservoir inches per year).   
> Does anyone have a source for compression copper washers like these?   

If the washer is in good shape, you should be able to re-use 
it by annealing the copper.  Google "annealing copper", which 
should tell you all you need to know.  Basically just heat the 
washer until it is red hot, then cool it in a bucket of water.

Kent McLean
'99 A4 Avant
'91 200 20V Avant
'94 100 Avant, now with SO's son
'91 200 20V Avant, up in flames
'89 200 10V sedan, up in smoke

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