Z you were right!

I pulled out the compressor, opened the bolt next to the clutch connector, turned it over a drain pan, and sure enough a bunch of oil came out. I didn't measure it but it was way more than 120 ml.

So it got re-oiled through the bolt about 95 ml and the rest in the ports.

Put the new dryer in, the new sensors threaded in nice and smooth. Just a little snug up needed at the end with a tool, the rest was done with fingers only.

It's under pressure from CO2 and appears to be holding, we shall see tomorrow!

__________________
The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech