2011 E350 oil / air leak?

[m34]

Afternoon all,

I've got an 2011 e350, and I've noticed that there appears to be a oil leak, and possible an air leak.

I think the oil leak may have been there prior to purchase, but want to get it sorted. It's not a massive one, but still... I've cleaned it all up (it looked a mess from where it stained)

I've attached pictures of where the oil leak is (see the red area), and near that I believe is a slight air leak but haven't been able to figure it out.

Anyone aware of any known /common issues? Where should I be looking for the oil leak?

TIA

Matt

 

[MrGreedy]

Bumping this old thread as I have what appears to be the same thing.

New orange seals fitted to turbo prior to my recent purchase. Private sale, so no retailer support I'm afraid.

 

[Larkone]

It looks like it could be blow by from the turbo to intercooler pipes - there are silicon seals (1 green one there, rest are black) in there - the big aluminium pipe coming from the turbo under the batwing. Easy to change and worth checking further along the line as there are more. I changed two on mine as they had compressed over the years. Made a real difference to performance and pickup as the system held better pressure instead of leaking off.

Thread here on how to change
OM642 Green O-Ring replacement instructions?