I used some stuff called Maxi-Frig. Direct drop in. Not supposed to put a
vacuum on the system, just load it in.

Works great! Well I mean for a van. Cold air at least, very cold.

Held for about a year now.

YMMV

Mike From Marin

On 7/20/09 1:00 PM, "Michael Hart" <mjhart853@YAHOO.COM> wrote:

> After a weekend of driving through some of the hot parts of CA & NV (100 -
> 103F in places), AC system repair / upgrade has moved to the top of my 'to-do'
> list (that together with transmission overhaul, but that's a separate
> post...). The system was last working fine (well for a Westy that is) for two
> summers after a system charge in Spring 2007, but the freon has obviously
> leaked away since then. I'm considering conversion to Freeze-12 rather than
> another R12 recharge (since the R12 will undoubtably leak away again, adding
> to the ozone hole..). Advice from anyone who has done this conversion would be
> appreciated. I am ready to attempt this myself, but would consider a shop job
> if anyone knows of capable AC shops in the San Francisco Bay Area.
>
> Thanks,
> Mike ('87 Westy)