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Date registered: May 2006
Vehicle: 2001 E320 - Brilliant Silver/Ash: 107,000+
Location: West Virginia, USA
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Quoted: 6 Post(s)
You probably have a leak somewhere but there is another theory. That is pressurizing and depressurizing the R134a over a period of time will cause it to lose volume. In any event, take it to a shop specializing in A/C and ask then to check for a leak. If you have one, the most environmentally friendly thing you can do is to have the leak fixed.
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