R-12 vs. R134a Freon

[WHO??]

horse shit!!!!!! added r 134a into r-12 system with no problems at all.
even 2 years later.


"noname" <nospam4meplease@nospam.net> wrote in message
news:v4pya.11$zc.5643@kent.svc.tds.net... Do not mix the two. They and their oils are not compatible. System has to be flushed and be properly serviced before charging with R134a. "James Pferrman" <JPFERRMA@tampabay.rr.com> wrote in message news:WCXwa.29721$N45.896029@twister.tampabay.rr.com... Would someone please advise what happens when you add R-134a freon to a car that has R-12 freon installed. I was told that the lubricant in the
freon was not compatible and would damage the compressor. Thanks, Jim

[451ctds]

Two types of R 134A oils are used. PAG oil is synthetic, and used in new
systems. Ester oil is compatible with the mineral oil based oil in an R 12
system. Ester oil is used in retrofit conversions. Using PAG oil in an
Ester based, or mineral oil based system * will * cause problems. Beware of
" top up kits " "leak sealers "and other booster products, most contain PAG
oil, and will damage an Ester based system.