Refrigerant Oil Distribution

Saturn air conditioning system requires 150 cc of PAG compressor oil. Service compressors have 65 cc of PAG oil installed.

New oil quantities must be added to system during component relacement and conditions stated as follows:

With no signs of excessive oil leakage add:

A. Compressor: Remove, drain, and measure oil. Drain replacement compressor. Add the same amount of new PAG compressor oil drained from removed compressor to replacement compressor.

B. Evaporator: 6.75 ml (2 1/4 oz.) of PAG oil.

C. Condenser: 22.5 ml (3/4 oz.) of PAG oil.

D. Receiver-dehydrator: 30 ml (1 oz.) of PAG oil.

Refrigerant Oil Loss Due to a Large Leak

If the refrigerant charge is abruptly lost due to a large refrigerant leak, (hose rupture or collision) approximately 90 ml (3 oz.) of refrigerant oil will be carried out of the system suspended in the refrigerant. Any failure that caused an abrupt refrigerant discharge will cause this oil loss. Conditions that allow the refrigerant to seep or bleed off over time do not cause this oil loss.

Upon replacement of a component which caused a large refrigerant leak, add 90 ml (3 oz.) of new PAG compressor oil plus the required amount of oil for the particular component (as outlined previously).

Add the oil directly to the replaced component if possible. If the oil cannot easily be added to the replaced part, add the oil to the compressor discharge port side hose (as outlined previously).