The main function of oil in a refrigeration system is to show the point from which refrigerant is leaking.

The majority type compressor which utilises mineral oils is the centrifugal compressor.

2 characteristics which make a good refrigerant oil are a low electrical resistance and a high acidity content.

Synthetic oils been developed to be used with HFC refrigerants because the mineral oils lacked lubricity and miscibility.

With reference to refrigerant oils, the term “hygroscopic” speaks to the oil’s ability to absorb moisture.

The abbreviation POE is used for the glycol oil created for use with automotive R-134a.