New Beetle Convertible L5-2.5L (BPR) (2007)
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Sight Glass: Description and Operation
A/C Refrigerant System Component Description
Sight Glass
If system is equipped with a sight glass, a properly charged A/C system can be confirmed when, with the A/C Clutch engaged and engine running at
1,500 RPM, the sight glass remains clear and bubble free.
‹› The mixture of R-134a refrigerant and refrigerant (PAG) oil may appear milky in the sight glass.
