IF,you had R12 and some form of "Compatible" with R12 Wannabe added later.

Go online and get your 609 certification and buy some R12 and put it in.


DISCLAIMER:
You don't Know what's in there...Ain't NOBODY gonna touch it (Nor should they)
with their recycling machine.

I consider the only SMART way to do HVAC is the LEGAL, SAFE way.
I.E. Re-Convert it to R12 (Start from Ground Zero).
Find some way to EMPTY it, Legally...
Flush everything, EXCEPT the Compressor,
(Hand flush by ROTATION of New Lubricant into the Compressor)
Re Ring with Nylog
Replace R/D
Vacuum/Pressure Test
Vacuum
Refill with R12 + Applicable Lubricant

Freeze your Tokas off.

__________________
'84 300SD sold
124.128