Quote:
Originally Posted by Brian Carlton
The vehicle was originally equipped with the R4 and that compressor is economical to procure and it will do a fine job for you in Socal ambients.
The preference for R12 really does not command a reverse conversion unless the ambient temp routinely climbs to 95°F. or more.
The key to success is a thoroughly clean system that is properly evacuated and filled exactly to specification. That's not an easy task for most folks.
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I live in the Antelope Valley, ambient summer temps typically reach 110 plus. So that is the only reason that I advocate R12. Even on full, my W210 A/C struggles to cool the car down during the summer, even though the system is up to specification (yes, I checked).