Well, it's only least cost if your system doesn't leak and if your RX dryer
is good - which is probably why one needs to add R-134a in the first place.
(because it leaks or your RX dryer is plugged).

However, it may leak VERY slowly.

Marshall Ruskin
>Did the conversion according to the package instructions.
>
>Have the R12 extracted.  Put new fitting on. Put R134a in.  Put oil in.
Put
>more R134a in.  Done.
>
>I changed nothing.  This is the "least cost solution" according to the
>materials purchased.
>
>-----Original Message-----
>From: Scott Grillo [mailto:scottgrillo@COMPUSERVE.COM]
>Sent: Friday, March 24, 2000 6:27 PM
>To: vanagon@GERRY.VANAGON.COM
>Subject: Re: Do-it-yourself conversion of air conditioning to 134a
>question
>
>
>Did you replace the receiver/dryer?  I thought this was mandatory if
>converting.
>
>Scott
>