Jul 09 2008
air conditioner has a small leak and did not have cold air for a year
Question:
I own a Mazda 1992 929. Tha air conditioner has a small leak and did not have cold air for a year and a half. My question is can I use 134 freon instead of the 112. What will happen if I just put in the134 freon. I am only interested in getting cold for a few months.Â
Answer:
You won’t ruin anything by running R-12 freon in your system. You will have to perform a A/C retrofit to be able to charge it with the R-134, though, as the fittings are different.
To perform the retrofit, you need to replace the service port fittings, flush the system out (the old oil is not compatible with R-134 oil), replace the filter drier if the system has been open for a long time, add the new oil, and charge with R-134.
I would highly recommend finding and fixing the small leak you describe, as freon is expensive, and is harmful for the environment.
