I'm more than 2 months behind on posting this, but at least I'll get started tonight.
Both breather covers leak oil... Remove & Repair

I paid $12 to get the video off of the EBAY channel 'MercedesSource'... off his own webPage actually. Most importantly he tells you the chemicals to use for cleaning & prepping the sealing surfaces & how to remove the old sealant without pitting the soft magnesium alloy. He suggesting ordering all new breathing hoses since the rubber hardens over time and you can almost count on damaging some in the removal process; so I ordered all new ones. In the first 3 pics below I was just checking the routing of the hoses to ascertain the minimum number of components I'd be forced to remove.








You can assemble the new breather hoses together on your workbench as Mercedes has placed TRIANGLES, SQUARES or CIRCLES on the ends and simply aligning them gives you the correct hose orientation. Good going Mercedes!





to be continued...