Unless the engine is blown and the turbo is hemorrhaging oil, the EGR will NOT be the source of the oil. Soot yes, oil no.

The #2 intake tract is right at the crossover pipe, so if the turbo is slobbering oil from leaking seals or the engine is worn enough to cause enough blowby to push oil through the breather hose, it will naturally collect in #2's intake tract.

__________________
Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]