What is the source of the oily discharge in my AC condensate?

2005 SAAB 9-3
140,000 MILES
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DAVIDGERRITY
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My 2005 saab 9-3 seems to have an oily residue in the AC condensate. I recently (3 weeks ago) had the refrigerant replaced as it was low. What could be the source of this contaminant in the condensate?
Sep 25, 2012 at 8:06 PM
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KHLOW2008
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That is an indication of a leak whereby oil from within the refrigerant is getting out. That is the cause of the low freon level.
Sep 25, 2012 at 8:08 PM