R12-R134a

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Old 29 May 2006, 07:31 am   #1 (permalink)
m Ransley
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Default R12-R134a

I know someone who has been putting in R134a in R 12 systems for 7
years, he said there are no compatibility issues it is marketing to get
you to evacuate your system and use more R134a. He said it does no harm
and has not on at least 10 cars he has done, even his.. Do I believe
this guy and let him put in 134a without evacuating out the old R12, is
it possible it is stated to evacuate just to sell more 134a.

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Old 29 May 2006, 10:22 am   #2 (permalink)
Travis Jordan
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Default Re: R12-R134a

m Ransley wrote:
> I know someone who has been putting in R134a in R 12 systems for 7
> years, he said there are no compatibility issues it is marketing to
> get you to evacuate your system and use more R134a. He said it does
> no harm and has not on at least 10 cars he has done, even his.. Do I
> believe this guy and let him put in 134a without evacuating out the
> old R12, is it possible it is stated to evacuate just to sell more
> 134a.


http://www.aa1car.com/library/retrofit.htm


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Old 29 May 2006, 11:26 am   #3 (permalink)
Daniel
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Default Re: R12-R134a

Informative link.

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Old 02 Jun 2006, 02:59 pm   #4 (permalink)
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Default Re: R12-R134a


"m Ransley" <ransley@webtv.net> wrote in message
news:6750-447AE988-469@storefull-3135.bay.webtv.net...
> I know someone who has been putting in R134a in R 12 systems for 7
> years, he said there are no compatibility issues it is marketing to get
> you to evacuate your system and use more R134a. He said it does no harm
> and has not on at least 10 cars he has done, even his.. Do I believe
> this guy and let him put in 134a without evacuating out the old R12, is
> it possible it is stated to evacuate just to sell more 134a.


Nope. Don't let him do it. The older lubricant is not compatible with 134a,
nor
some of the elastomeric seals.

I would guess that this guy is not registered to work with R12, and probably
doesn't even have the required tools to remove R12, perform the flush,
install
the seals, and make the proper conversion to R134A.

R12 is still available. None of the local mechanics here work with it, but
some of
them use Freeze 12. The locals claim very good results, however not all
resources
are high on Freeze 12.

I intend to convert my 90 Reatta to R134a soon. I am researching it well
before
I start, using the old saw ' measure twice, cut once'.


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Old 21 Jun 2006, 02:32 am   #5 (permalink)
sqdancerLynn
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Default Re: R12-R134a

Their is NO direct R12 drop in freon. R12 & R134 are NOT compatable &
require different oils. Unless the system needs a new compressor I would
look for someone that has R12
to fix it. The R12 will be expensive but still cheaper than a conversion

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