Convert/retrofit to R134a or stay R12?

[Tony Hoffman]

One other thing to mention, now that you said about the oil leak from the
compressor.

The "manifold" that bolts to teh side of the compressor. It is a two piece
design, with an o-ring between the two pieces. Very common leak point. Just
fixed this on both my 100 and a customer's 100. Did a 200 last summer. What
I have done is take it apart, clean everything very well. Then, I silicone
the area where the o-ring seals. I have put the o-ring back in, then let
the silicone fill in the "low areas". I like to use the grey reinz silicone
that is OEM for late model Audi oil pans.

HTH,
Tony

On Wed, Jun 19, 2013 at 8:40 AM, SAJanesick - Bellsouth <
sajanesick at bellsouth.net> wrote:

> Kenneth -
>
> When I tried a direct R134a replacement, I not only got mediocre cooling,
> but it also leaked over time.  High side pressure when running dropped by
> about 50% over the next 4 weeks.  I think my leak was mainly in the
> compressor as it would leave a drop or two of oil every day on the floor.
>  I assume the compressor has a poor seal and perhaps the R134a is carrying
> some lubricant out with the leak, but who knows?