- Jul 17, 2009
- Reaction score
- Keynsham, Bristol
- Your Mercedes
- Present 2004 W211 E500, 1995 W124 E320 CE Coupe.
Hello there! My 500 SEC needs to have the aircon converted from the old R-12 system to R-143. Is there anyone out there that has had this done? What does it involve, how much would I expect to pay. I'm wondering if it's cost effective. I would be grateful for any advice. Thanks in advance.