It's my understanding that this procedure is required if you're running
blended refrigerants like Freeze-12, but I think both R-12 and R-134a can be
topped up.  I fill my A/C based upon the system pressures rather than
refrigerant amounts.

On 9/6/06, trooz <trooz@adelphia.net > wrote:
>
> I was told that one cannot simply add 134-A to a cooling system that's
> only
> blowing about 57 degrees.  They said the system had to be totally
> evacuated
> and then filled with a precise amount.  Anyone know about that?  I've
> always
> had Freon added in the past (it's been R-12 until a few months ago when I
> had the system converted to 134-A).  Is this something peculiar to 134-A
> or
> just peculiar to this shop?  They're talking close to a couple hundred
> dollars to do it.
>

Casey
Olympia, WA
Biodiesel: "I drive in a persistent vegetative state"
'87 300TD intercooler #22 (218k)
'84 300D (216k)
Gashuffer:
'89 Vanagon Wolfsburg Edition (187K)
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