Looking for a/c system capacity as well as any additives required. Input greatly appreciated

 

FWIW (and probably not much) for my 996 Turbo with the auto climate system (variable displacement compressor) the refrigerant quantity is 900 g R134a. Refrigerant oil quantity is 195 +/- 15cm^3 ND 8.

Do not have the numbers for the 996 system with the regular A/C system.

 

Thank you for taking the time to respond....greatly appreciated. Surprised it doesn't show up in the owners manual.