I'm not sure from your response, but have you replaced the Oil Filter Housing Gasket? The OFHG is probably the most common oil leak in the 3.0.

__________________

2003 E53 3.0i
DOB 10/15/2002
Sienna red, Savannah Beige Dakota leather
Type FA53, Engine M54B30

2018 G02 30i
DOB 4/21/18
Black Sapphire Metallic / Canberra Beige Vermasca leather
Engine B46O