"Daniel J. Stern" > writes in article ch.edu> dated Thu, 14 Jul 2005 10:45:35 -0400:
>No, it doesn't. There is no such thing as R13.

http://www.refrigerant-supply.com/references/r-13.htm
R-13 is Chlorotrifluoromethane
F
|
F-C-Cl
|
F

As opposed to R-12, which is Dichlorodifluoromethane
Cl
|
F-C-Cl
|
F

I'm not saying R-13 refrigerant has ever been used in cars, but it does exist.

-- spud_demon -at- thundermaker.net
The above may not (yet) represent the opinions of my employer.