|
R12 isn't in demand and the price isn't that outrageous anymore. Check ebay and craigslist.
If the system is overall tight and only needs a minor repair, stick with R12. 134a won't cool as well unless you change the metering device, it shouldn't be used with your existing oil and it will leak down through non barrier hoses and old style o-rings.
There are also replacements to R12 which work great. Downside is that they are azeotropic blends which shouldn't be topped off.
That said, if the system was working perfect and just stopped all of a sudden, you don't have a small leak. If it did leak out, you'll have an oil mess around the damaged area. Your refrigerant may very well be fine. If so, I'd start with pressure switches and the switch on the evaporator which cycles off the compressor to prevent freezing. Hopefully the problem is under the hood and not with the interior climate controls.
__________________
George in Indiana
928 Weissach #153
Cayenne S
|