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Apparently there is an AC leak in my system. Is there an aftermarket sealant that you can put through the system. Had my AC charged at the shop and it held and blew cold for a while then stopped working. Must be a small leak, but not sure where it is coming from. Thanks for any advice.
 

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Nuclear engineer
02/2012 X5 35d M57Y CPO 100K miles NOKIAN WR G3 20K miles
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18,315 Posts
An emergent charge should include a leak revealing dye. The function of the evaporator/thermal expansion valve includes a leak-sized orifice, obviating a sealant of which I have never heard.

Born and raised in Santa Clara.
 
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