Hybrid - Installing used AC compressor. Oil?
 

I am in the process of installing a used AC compressor in my 2007 Honda civic hybrid. I am aware there needs to be a certain level of specific oil in the compressor, but unlike a lot of AC compressors, there is no drain plug on this model.

how do I drain, check, or replace the oil that is in this compressor? I've checked it electrically and shimmed it properly on the clutch using instructions from the service manual. But I can't figure out how to remove or put oil in it and do not want to roll the dice after all this work.