[Vwdiesel] R12 replacement

[Doyt W. Echelberger]

Be aware that using these alternative substances puts you on your own for 
commercial service to your system.

Commercial shops test your system to be sure it isn't contaminated with 
things like AutoFrost, etc. If they find it, they ask you to leave. It 
contaminates their draw-down equipment.

As a result, if your system contains anything except R-134a or R-12, you 
will be treated as an unwelcome customer. Getting anything except the 
specified substances into their draw-down machines would disable the 
machines until they had been "sterilized." The machine would be down for 
the day. Nobody can afford that kind of extra downtime.

The above information is paraphrased from conversations with the owner of a 
commercial air conditioner shop that specializes in automobile systems.

Doyt Echelberger


 >>>>>>>>>>>>>>>>>>>>
At 08:20 AM 3/16/2005 -0500, you wrote:
>For the best true drop in, check out R-406A, AKA Autofrost.  True drop in.
>
>There are some long term durability issues with R134, and propane mixtures
>tend to leak as the molecule is much smaller.  I did extensive research on 
>this
>back in the mid 90's, and Autofrost was one of the better R12 retrofits.
>
> > -----Original Message-----
> > From: Shalyn Shourds [mailto:sshourds at flash.net]
> > Sent: Tuesday, March 15, 2005 11:40 PM
> > To: vwdiesel at vwfans.com
> > Subject: Re: [Vwdiesel] R12 replacement
> >
> >
> > 134a isn't that much harder to install.  I've not done it as I don't
> > have all the tools, but Dad has rolled over his fleet to it
> > and as long
> > as the system remains intact (my '85 has a blown evaporator),
> > it works
> > fine without having a flammable gas in the cab.  If I recall
> > correctly,
> > it's just some fittings and a new receiver/dryer.  Toolwise,
> > you do have
> > to have a new set of gauges, or at least new hoses for your
> > old ones.
> > Dad converted all of his cars even though he was still sitting on a
> > stockpile of R12.  Doesn't even know what to do with it now.  Prices
> > dropped because everyone's converting.
> >
> > -Shalyn
> >
> > Sandy Cameron wrote:
> >
> > >New thread for old volks.
> > >Summer is comming.
> > >
> > >Have a look at (google ) duracool, avail. in both Canada and USA.
> > >
> > >Basically, it's propane with some additives.
> > >
> > >I think I'll try it in one of the 87's if I can find enough
> > of the hoses to
> > >put the system back together
> > >
> > >All standard disclaimers apply.....
> > >
> > >Sandy
> > >
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> > >
> > >
> > >
> >
> >
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