PAG 150 is what I used. System calls for just under 9 oz of oil but I believe that is for the complete system. Think when I replaced my compressor, i drained it and it had about 6 oz which is what the replacement compressor had a factory fill if I recall correctly.
PAG oil is what is used in R134A Freon systems. There is a different compressor oil used in older Freon R12 systems-- which is not what is in our cars. I believe R12 was abandoned in production cars in 1996 in favor of 134A systems.