I'm with Tom on this. My car came with factory-original AC leaks, and got the R-134a conversion after eight months and three R12 'recharges" after it came to me (at about 8 years old and less than 17k miles on the odometer at that point). For that I did an aerosol-can 'flush' of the condenser and ...

Is it always necessary to flush the whole ac system when changing out the compressor? From what I can tell mine didn't seize. It just is leaking from the compressor. I've read that flushing will remove all old oil from the system also. I'm converting to 134, adding a new expansion valve, condenser ...

How important is it to flush with nitrogen after cleaning? I've seen videos of people using both air or nitrogen. Will compressed air work well enough? Also is there any recommended PSI?

will this tool version also work for 1986 944 also?

I’d love to get one of these if you’re still making them. Thank you!

How do you know if you need to flush the lines to the evaporator and condenser prior to replacing the compressor? I assume you need to back flush the system? Thanks