I have a 2004 S300 w/ Gold Package. The A/C system went flat. In the service manual they said to replace the filter/dryer and add 1 oz. of PAG oil. I went to my local NAPA and they have 5 versions of PAG oil for R134 systems. They carry PAG 46 viscosity, PAG 100 viscosity, PAG 150 viscosity, RL488 Hi viscosity and RL244 Low viscosity. And can you guess what my question is!? Yep, which oil?