Mixing refrigeration oil

[DodgingPotholes]

Hello! My car is a 1995 Chevy Caprice. When I replaced the A/C Compressor (20 years ago) I used BVA AUTO- 100 synthetic refrigeration oil in the compressor and the Receiver Dryer. I want to replace the Receiver Dryer and I am trying to find out if I can use BVA RPAG-125 GM APPROVED 9985752 to add to the receiver dryer? (service manual calls for 4 oz.) The BVA AUTO- 100 was what was sold to me originally but I want to use the "GM approved" as a replacement if this can be done without any issues.
Thanks for any help!

[Tim]

Not wise to mix oils. If you flush all the old oil and replace the accumulator. You can use any PAG for the specific compressor.

[DodgingPotholes]

Thanks! The oil I bought from Arizona Mobile Air was BVA AUTO- 100 Synthetic refrigeration oil (in a 8 oz. plastic bottle) I looked on the sight and I don't see it listed. Is there a brand that you can recommend that is similar or will just any PAG 100 work?