PeachParts Mercedes-Benz Forum - View Single Post - Ac system rebuild-- synthetic oil R12 to R134a

dmorrison · #9 11-21-2003, 10:16 PM

Ok let me add some items to the discussion

I have not installed the R12. I am in the process of assembling the system so no R12 has been installed as of yet.

I do live near Larry Bible and I know his outlook on the R12/R134a disscussion. I also believe in the R12 for the 123 cars. the sytem as installed is weak. so by going to a Parallel flow condensor I will boost the capability of the AC system. I also found that aout 50% of the evaporator was blocked by the accumulation of dust and debris over the 22 years the car has been in Texas and Oklahoma.
I willl install R12. But what if I develop leaks. I have a sniffer and can locate any R12 or R134a Leak with the unit. I was just thinking about the switch from R12 to R134a could be done because the oil is synthetic. So not oil problems in the switch over.

Grdenko
I also had the evaporator leak, its a bear of a job getting to the AC box. But doable. My conclusion is to keep R12 if you can. That is what I intend to do. If you are talking about a 123 body. The system is weak at best and going to R134 will make it weaker. In Texas its damn hot and sunny so a good AC system is essential.

leathermang
Yes I will keep R12. Texas is no place to have a so-so AC system.
I also have tinting in the car. It does help quite a lot.

Rick Miley
great to here about the $18 a can. I bought R12 last Jul and it was still $35 at the local parts shop. Where did you get the R12?

OK guys your going back to the R12/R134 change discussion whick has been shot, killled, beaten, tourtured and just plan discussed to death. I prefer R12 for this application. R134 is fine IF the system is designed from the ground up for R134.

So back to the debate.

Dave