A/C Compressor Refrigerant Oil Checking: Gm
WARNING: This page does not describe the selected car, but rather 60 other vehicles, including the 1995 Pontiac Trans Sport, 1995 Pontiac Sunfire, 1995 Pontiac Grand Prix, 1995 Pontiac Grand Am, and 1995 Pontiac Firebird. However, it is still accessible from the selected car via links, so may be relevant.
On all models except Saturn, use PAG Refrigerant Oil (Part No. 12345923). On Saturn, use Saturn PAG Refrigerant Oil.
NOTE:
Synthetic/PAG oil absorbs moisture very rapidly, 2.3-5.6 percent by weight as compared to a mineral oil absorption rate of .005 percent by weight.