FEY,gary,
Bad!  you can't do that as the two refrigerants are not compatible with
each other!  I forget what exaclty it wdoes to you r sytstem, but
it's not good.  Anybody know why they're not compatible?

Sean

> 
>  Tim Marciniak wrote:                        tmarcini@execpc.com
> 
> >Just wondering if anyone on the list has any information on the refrigerant
> >changes (R-12 to R-134) that we all may be facing in the next 2 years or
> >so.  Does VW have any conversion kits yet for the Vanagon, any mention of
> >what the cost might be?  GM says their upgrades may be $500 to $600 while
> >Fords may run $1000 to $1200.
> 
> I lost the freon (R-12) charge in my 88GL and decided to recharge it with the
> R-134.
> I had an old vacume pump (the old high school demo kind purchased from a flea
> market) with which I evacuated the system.  I made fittings to connect to the
> ports on the Vanagon system from pieces of hose that I had and common
> fittings that I bought at the auto parts store.  Once evacuated, I put in 4
> (48 oz) cans of the new  R-134
> and 2oz of compresser oil [USE SAFETY GLASSES!].   The manual calls for 50oz
> total. This was done with the engine running the air conditioner set to high.
> It works great - can't feel any difference in cooling power.  Total cost =
> less than $50. 
> 
> Gary  -  Balt. MD 
> 88GL, 80Westy
>