I am continuing to work toward finally getting the air conditioning working again on this car. I had a previous post here:
https://www.brickboard.com/RWD/volvo/1666198/940/960/980/V90/S90/ac_recharge_condenser_replacement.html
I am confused about which receiver/dryer port I pour the PAG oil into. Does it go into the port on the condenser side (large pipe entering the front) or the evaporator pipe out the side?
https://imgur.com/a/7STtab6

As an aside I did replace the orifice tube today. To the best of my knowledge the system is original other than a compressor discharge hose ten years ago and the recently replaced condenser. I don't know if the amount of crud on the orifice tube is normal or not. It doesn't seem like a lot for 25 years of service.
https://imgur.com/a/yYzLm7n
Any twenty minute job is just a broken bolt away from a three day ordeal
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