I have a 94 Sc300. I recently got the system recharged it. It had zero freon in the system. Recharged it and it worked fine. It passed the vacuum test, the compressor seems the be good, blew cold air. However the very next day the freon all leaked out. I pushed in one of the valves and nothing came out, so there is a leak.

My question is how would I find the leak if it passed the machine leak tests? Should I go and replace all of the O-rings and if so how would I do that? How many o-rings in the system?

Also I would like to use r152a in my system. Do shops typically accept that type of thing?

 

the shop i went to added dye to my freon so if there was a leak we can track where its coming from. Take it back to where you got it recharged and see if they'll be of any help.