I went the 'legal' route and had the system changed over by an AC shop.
Very pricey.  Doesn't cool as well as R12 even with a better condenser.

Mike

On 3/14/04 11:09 AM, "Jaime Forero" <jforero@PDQ.NET> wrote:

> My 91 has an R12 system.  Has anyone done a modification to 134A??  Does the
> whole system have to be changed, i.e. hoses, compressor evap, etc??  I am
> tired of paying around 35 dollars a can of R 12 to recharge the system.
> Thanks
>
>
> ----- Original Message -----
> From: "Gerald Masar" <azsun99@EARTHLINK.NET>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Sunday, March 14, 2004 11:49 AM
> Subject: A/C tune-up time
>
>
>> For those who live in parts of the country where it is starting to get
> very warm, and
>> want some basic info on toping up or re-charging your A/C system, here is
> a site that
>> might be helpful:
>>     http://www.genetron.com/diy/Diy_134A_UV.html#
>> Genetron makes 134a and is part of Honeywell.
>> Jerry
>
>