ACK! What would I do without this list. Thanks for heading off a near
disaster.

Guess I will hold out for my excessively late mail lady and just put the Red
Tek in if it gets here. Otherwise we can just bake to the hill country.

Owen
----- Original Message -----
From: "John Connolly" <john@AIRCOOLED.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, July 02, 2003 10:07 PM
Subject: Re: R134a in 88 Weekender.

> Just a word of warning; most R-12 and R-134a comes with oil (lubricant) in
> the proper proportions pre-mixed in the can. THE OILS ARE NOT COMPATIBLE.
If
> you put in R-134a without a complete oil change (the compressor contains
> 5-7oz of oil) and system flush, you made a major boo-boo. Ask me how I
know.
>
> the systems are compatible with one another, but it requires a time
> consuming system flush (I used a flush kit, and Mineral Spirits, along
with
> my air compressor). You have to take everything apart, and replacing the
> o-rings is a wise move since they are already apart. Replacing the
expansion
> valve and dryer ( a good idea, and a MUST, respectively) round out the
job.
> THEN you can put your lubricant and refrigerant of choice into the system,
> following the proper charging procedures (vacuuming out the system, then a
> charge).
>
> If you mix R12 and R-134a oils, you will more then likely find out why
this
> is not a good idea. The combination does nasty stuff to the dessicant in
the
> dryer, and the resulting system contaminants will destroy you compressor
in
> short order. Like I said, ASK ME HOW I KNOW.
>
> John
> Aircooled.Net Inc.
>