Toyota air

Hello dear companions I am here with the intensance of clarifying some doubts, I have two vehicles a Land Cruiser Toyota Motor 3F that uses a 10PA 15C refrigeration compressor 15c dense brand and a corolla Sky year 92 that uses the same compressor model the two use R 12 cooling, now the question is the following that amount of refrigerant use the air conditioning systems of the individual vehicle. Undoubtedly, and the amount of oil that is added in the system starting from a whole bone taking into consideration that everything was extracted in the system and will be loaded from the beginning, they hear in truth I would be interested to inform me, thank you, thank you