Freeze 12 works fine in older systems.

Anthony
'89 Syncro GL (Hidalgo)

--- On Sat, 10/4/08, JAIME E FORERO <jforero@SBCGLOBAL.NET> wrote:
From: JAIME E FORERO <jforero@SBCGLOBAL.NET>
Subject: Re: AC does loses freon
To: vanagon@GERRY.VANAGON.COM
Date: Saturday, October 4, 2008, 12:09 PM

Thanks all.  I gather that the conversion to 134a can be made without major
component modification. Going to freeze 12 required no modifications. I am
tempted to try the 134a.
Any thoughts??  Has anyone in this forum used freeze 12??
Cheers
Jaime

--- On Sat, 10/4/08, Richard A Jones <jones@COLORADO.EDU> wrote:

> From: Richard A Jones <jones@COLORADO.EDU>
> Subject: Re: AC does loses freon
> To: vanagon@GERRY.VANAGON.COM
> Date: Saturday, October 4, 2008, 10:35 AM
> > I've read that the old oil can't be fully
> > removed, and when you add the new oil, they mix and
> make a
> > difficult-to-remove coating, which helps to seal the
> pores in hoses.
>
> My version was "the old oil has sealed all the pores
> over the
> years...."  Hard facts are really hard to come by with
> AC.
>
> I converted my '87 from non-functioning R12 to R134a.
> They
> tested for leaks, then evacuated and converted.  It worked
> fine--
> plenty cool--for 2-3 years until one winter when I could
> not
> run it monthly.  The compressor seals dried and it leaked.
> New seals, and now it has run cold for a couple of summers.
>
> One of my smug pleasures is running the AC while grinding
> along
> some Syncro road in granny low while the ATVers eat dust.
> ;-)
>
> Running monthly year-round is one key to staying cool.
>
> Richard