At the rate the oil is leaking, if it is the ac compressor seal, the ac system should be out of refrigerant already or soon. Does the ac system work well? If the problem is related to the ac system, get it repaired now rather than wait until another time because once all the refrigerant is gone, air will replace it and then you'll most likely have to replace the dryer along with a long draw down of the system with vacuum to remove the air. Plus, air has water in it and water will possibly cause corrosion of the internal ac parts. Save time and money and fix it now.