GTV6 AC (again)

[Joe Elliott <jee@domain.elided>]

Some of you may remember my seemingly-successful  experiment with 
hydrocarbon refigerants in my GTV6's aircon last summer.  Well, the 
fittings on the condenser were rusted stuck, so I didn't bother 
replacing those seals, and guess what--all my refrigerant leaked out 
around those seals.  I think I have two cans of refrigerant left, and 
my question is whether that will actually be enough (I know we 
discussed this last summer, but my memorization and note-taking 
abilities aren't what they should be).  Anyone happen to know the 
capacity of the ('82) GTV6 AC system (with a Milano compressor)?  Or 
better yet, what the pressure should be with R12?  (If I recall 
correctly the ES-12a says to use the same system pressures as you 
would with R12.)

Thanks,
Joe Elliott
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