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Oil distribution > < R134a refrigerant gas

Polo Mk4

Cooling gas oil
Cooling gas oil
A special oil must be used exclusively for R134a cooling gas loops, and that should not be purchased in stores that sell oil for machines with cooling gas for home use.
The cooling system oil may be acquired as indicated on the table below:
   
ManufacturerCompressorPart number (oil)Filling capacity (oil) → Remark
Delphi5Z0 820 803G 052 154 A259.06 in 3
5U0 820 803
Denso6Q0 820,808 AG 052 300 A280 ± 3.94 in3
6Q0 820 808 B
6Q0 820 808 D
6Q0 820 808 E
6Q0 820 808 F

1)  This quantity of cooling gas oil is in a replacement compressor, corresponding to the filling capacity.
Important information:
Coolant oil is very hygroscopic (absorbs moisture); therefore, opened containers must be closed immediately after use to prevent ingress of moisture.
Because of its chemical properties, the cooling gas oil must not be disposed of along with engine oil or gearbox oil.
   

Oil distribution > < R134a refrigerant gas