Hi Johnny,
Unfortunately once the system is filled from the factory there is no set amount to add back to the system if you are just replacing the compressor.
You need to evacuate/recover the system and then measure the amount of oil that comes out of the compressor when you pour it into a container. Then this is the amount you put in the new compressor, then refill the system with the amount you recovered when you evacuated it.
Please let me know if you need more information. I will be happy to help.
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Wednesday, May 29th, 2019 AT 2:42 PM