Anything but R134a is for people that try to cut corners.
There is definitely no OEM's using LPG in automotive AC system either, thats for sure.
Sorry man gotta disagree - r134a isn’t great, although it works, it’s long term environmental effects are still uncertain.
Lol yeah I worded that wrong, of course lpg is an automotive fuel. Lpg/propane CAN be used as its a great refrigerant and non o-zone depleating. Plenty of people think it’s dangerous, but in reality it’s not.
There’s another similar flammable gas that is used in modern cars, and this is the one I was thinking of when I made my last post. My mistake.
https://www.1234facts.com/what-is-solstice-yf/
If you want safety info on using a flammable gas as a refrigerant - there’s info in this link too.