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R-134A Lubricant

Graydon, EXCELLENT point about the lubricants for R-12 and R-134A 
being incompatible.  I understand from my changeover experience 
that the R-134A requires a synthetic oil (gee whiz and hmmmmm, we 
sure do run into that term a lot any more don't we??) and will not 
work with the oil used for R-12.  While I can't prove it doesn't work 
the other way, I'm sure those who work in the industry would know.

The compressor which I bought as "R-134A ready" came pre-packed with 
the appropriate synthetic oil.  FYI, the packaging did NOT say that 
this oil would not work with R-12; it did however warn that the 
compressor had to be turned at least 10 full rotations before the car 
was started to dissipate the oil into the AC system.


Al Powell, Ph.D.                 Voice:  409/845-2807
107 Reed McDonald Bldg.          Fax:    409/862-1202
College Station, TX 77843