I have seen this go both ways. If the r-12 is available to you, it will be fine. The only thing that I have seen is the 134-a will dry out the oil on some occasions and the compressor will sieze up after only a shor time. I see more and more people recommend the 2 year drain and re-fill of the system of new 134 and oil.

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Benzmac:
1981 280GE SWB
1987 16V
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
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