Posted by Mark on January 10, 2001 at 03:27:34:
In Reply to: Re: Haven't gone to r134a...yet posted by Peter Florance on January 08, 2001 at 07:35:33:
Since changing over to the blend I have had no leaks.This included a period when the car sat for six months sans use while the fuel injection was put on.Actually I should have fixed the a/c after the injection,but didn't realise the job would take so long.
After the car was finished the a/c still worked great inspite of the layoff.Then someone told me about fr12 being hard on pipes so not wanting to damage the new pipes (they cost a fortune) I switched to what I think is isceon 48 (not sure,must confirm this).The guy that told me this just goes around the local worshops filling and evacuating ,that's all he does.He told me the stuff I am using is easier on the hardware and blows as cold as r12.Another guy goes around the shops just crimping hoses (had to use him because the fuel inj retrofit involved some refrig pipe re routing).
These guys were not lying,it does blow as cold as r12, in fact if it went any colder the evaporator core would ice up ,4 degress centigrade is the cut off point.
Ted put in some U.S. made ultraviolet dye that will make finding leaks easier.
This was a year ago I haven't had any leaks and have required no top ups.It works just as well as it did the day they filled it ,no drop off in performance.
Yes it's a blend but laws are slack here,anything goes.Anyway I haven't needed a top up.IMHO the metal pipe fittings used on Behr systems in the late 60s and 70s are of far better quality than you find today.Most of have I retained ,changing just a few to recognise the new blend. :-)