Compressor Oil Check
WARNING: This page is about a different car, the 2011 Hyundai Elantra. However, it is still accessible from the selected car via links, so may be relevant.
The oil used to lubricate the compressor is circulating with the refrigerant.
Whenever replacing any component of the system or a large amount of gas leakage occurs, add oil to maintain the original amount of oil.
Oil total volume in system
PAG OIL: 120 ± 10