I have read on this list of happy users of R-134.  When I mentioned that to
my mechanic here in Phoenix, he asked if the advice came from "back east".
He told me that here in the desert, R-134 basically does not work.

Karl Wolz

----- Original Message -----
From: "Eric Small" <EricJSmall@AOL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Monday, May 29, 2000 7:50 PM
Subject: Re: R12 vs. R134

> Blitz,  as already has been pointed out R-12 is a superior refrigerant to
> R-134.  I also subscribe to the conspiracy theory behind the banning of
R-12.
>  Much research seems to indicated that this is all based on bad and profit
> biased science, but what are you going to do.... This is America and you
have
> to take the few bad things with the many good things.
>
> In any case,  I performed an R-12 to R-134 conversion on my 1990
Oldsmobile
> last year in conjunction with a complete AC system replacement (except the
> compressor which was a GM "R-134 ready" compressor).  My experience was as
I
> expected-  it did not cool as quickly or efficiently and the compressor
> worked harder.  Overall it worked fine for my A/C needs in Maine.  If I
were
> back in Texas it would likely have been unacceptable.
>
> There are 2 significant reasons for NOT doing this conversion in your
> Vanagon.  First, as I mentioned, your compressor will have to work harder.
> It is already old -this could push it over the edge then you will be
spending
> money.  Secondly,  -and more importantly in the short term-  the R-134
> molecule is much smaller than that of R-12.  If there are leaks or even
weak
> spots in your old system they will be big leaks with R-134.
>
> My van has required a recharge nearly every year as long as I've owned it.
A
> recharge costs about $125-$160 depending on region and refrigerant
> availability/prices.  In my mind its a cost of being cool... R-12 will be
> available for a long time -I budget for the annual expense and think bad
> things about the individuals responsible for the current arrangement -who
> ever they are!
>
> Good-luck... I hope this is helpful
> Eric Small
> So. Portland, Maine
> '86GL Weekender
>