sort of looks like those pressurized cannisters from Home Depot for dispensing mixed chemicals.... wonder whether the adpater and one of those would not be the way to save $ if used every 2-3 years.

Also, what does anyone else know about flushing the tranny throught the transmission cooler return line?

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2008 S550
2010 GLK350
1997 E420 (retired)
2005 CLK500 (retired)