Refrigerant Oil

System Capacity
Compressor systems require 240 ml (8 fluid ounces) of Polyalkylene Glycol (PAG) synthetic refrigerant oil (GM P/N 12345923 or equivalent).

Component Quantities
During component replacement and conditions stated, new oil quantities should be added to the system as follows:
^ Compressor assembly replaced.
^ If less than 30 ml (1 fluid ounce) is drained, add 60 ml (2 fluid ounces).
^ If more than 30 ml (1 fluid ounce) is drained, add same amount as drained.
^ Accumulator assembly replaced.
^ Add 30 ml (1 fluid ounce) more than what was drained from old accumulator assembly.
^ Evaporator replaced.
^ Add 90 ml (3 fluid ounces) oil.
^ Condenser assembly replaced.
^ Add 30 ml (1 fluid ounce) oil.

Abrupt Loss
If the total refrigerant charge is abruptly lost due to a large refrigerant leak, approximately 90 ml (3 fluid ounces) of refrigerant oil will be carried out of the system suspended in the refrigerant. Any failure that caused an abrupt refrigerant discharge will experience this oil loss. Failures that allow the refrigerant to seep or bleed off over time DO NOT experience this oil loss.

Upon replacement of a component which caused a large refrigerant leak, add 90 ml (3 fluid ounces) of new Polyalkylene Glycol (PAG) synthetic refrigerant oil (GM P/N 12345923 or equivalent) plus the required amount of oil for the particular component (as outlined above).

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 accumulator assembly.