Mercede benz e320 cdi 2006 sport oil leak

[Carmadness]

Hi all i have a mercedes benz e320 sport 2006 w211 and i have had the car since november and i noticed an oil leak from behind the starter motor. so i decided to take off the top sump to clean it and see but it is still leaking so i decided to change the oil cooler seals ,turbo seals,and the manifold seals, and there is a drain next to the oil cooler that any lekage go to the bottom.Any way , i done all that work and tere is still some resin comig out but not much. What can it be ?. Can anyone help .
help please!