Thanks Larry,

The system wants 2.2lbs or 35.2oz. I put in just shy of three cans, so at most 35.8oz.

I just found the factory specs for the w210 gassers. It looks like my low side pressure is about a bar to high and vent temp 10-15 degrees to high. Looks like I might need a new compressor, according to the MB sheet

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1998 Mercedes E300TD

1983 Mercedes 240D Turbo, 131bar injectors, Cosworth intercooler and 63' Ford Falcon radiator, Ardic Parking heater, Headlight wipers, Best 38.6mpg.

1973 Saab 96 Rally Car, 1.8l V4 with all the race bits