On Thu, 17 Jun 2004 08:58:43 -0400, Martin Green wrote
> Officially, just so people know, HydroCarbon refrigerants are not allowed
> in all states.  From the EPA website about HC refrigerants
> (http://www.epa.gov/ozone/snap/refrigerants/hc-12a.html#q9)
>
> The following 18 states ban the use of flammable refrigerants such as
> HC-12a� and DURACOOL 12a� in motor vehicle air conditioning,
> regardless of the original refrigerant: Arkansas, Arizona,
> Connecticut, Florida, Idaho, Indiana, Iowa, Kansas, Louisiana,
> Maryland, North Dakota, Oklahoma, Texas, Utah, Virginia, Wisconsin,
>  Washington, and the District of Columbia.

Also, I posted a link a while back to an A/C compressor manufacturer's site.
They did testing and found material compatibility problems with a lot of the
hydrocarbon refrigerants -- seal swelling, hoses becoming porous, that sort of
thing.

David Brodbeck, N8SRE
'86 Volvo 240DL wagon
'82 VW Vanagon Westfalia Diesel (ebay #2481476461)