Has anyone had any luck or any problems converting their FJ60 AC from R12 to R134? Anything to watch out for?
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
Evacuate, screw on the conversion fittings, and go to town. "Needing" to swap out every O-ring in the system is a myth
it seeps past connections not designed for it.
No they don’t, I’m an Infiniti tech and all of our A/C systems have one o-ring per line fitting.Yes, BUT -- Modern AC systems designed for R134a have triple-seals. Old R12 have single. Same kind of O-ring, just more of 'em...
The guy at the AC shop showed me the difference, but I did the conversion anyway. I've checked for a leak with both UV and red dye. None. I plan to switch to Duracool or Envirosafe when time permits. The R134a cools very well. No reason not to switch to R134 since it's available everywhere (for now)... Just requires more maintenance, that's all. At least that's my experience with FJ60s.
Changing out an O-ring that leaks is not the same as changing out every O-ring because the r134a is “different”. So yes, it is a myth
Stay with the R12, if it's available. I've done the R134a conversion and it cools fine, but the R134 molecule is much smaller than the R12 and I find I have to add refrigerant every season because it seeps past connections not designed for it. I had a pro shop change out all seals and used a fresh Denso reman compressor and new dryer, etc ...
There's another thread about using a R12 alternative that may be for you ...