First recover the gas, and you have to disassemble the compressor, in the center of the compressor you will see a quitalo screw put it upside down that comes out everything I think you are going to change the retain not? After approaching, put 5 ounces of oil should carry 8 but as the A/C is always opened in the system, it does not require more than only 5 in the compressor and ensure that it is refrigerant oil 134a because it is used in 94 models onwards: Woohoo: