Hmmm...

I missed the part about pulling the refrigerant pre-condenser. Also, you didn't say anything about regulating the pressure - you said you would just connect the hose and turn the systems on. Still, I'd be worried about the temperature of the refrigerant, even if it is gas. That liquid line gets REALLY hot. Something about channeling hot gas into the cold suction line just doesn't sit well with me.

But who knows - it might work.

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08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280