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AC dryer: What are you supposed to see in the window?
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06-07-2012, 06:41 PM
DeliveryValve
Chairman of my Benz
Join Date: Jun 2006
Location: Central California
Posts: 4,159
You can't really use the sight glass for R134a. Your best bet is to hook up some gauges to your system to truly find out what's happening.
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