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Volkswagen Workshop Service and Repair Manuals

Refrigerant Pressure Sensor / Switch, HVAC > < Refrigerant Oil|Capacity Specifications|Page 4702
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Refrigerant Oil: Description and Operation

Refrigerant oil

A special Polyalkalene Glycol (PAG) synthetic oil is used in R-134a systems. This oil is NOT compatible with mineral based oils used in R-12 systems.

See Safety measures, Warnings and Cautions regarding proper oil usage.

Refrigerant Pressure Sensor / Switch, HVAC > < Refrigerant Oil|Capacity Specifications|Page 4702