Hallo, sirs,

I would like to ask you from where this oil leak trace can come ?
And how it can be repaired? What i need to do ?

Freelander 2 / 2011 - 2.2 TDI Engine

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Cut a thick piece of cardboard and wedge it under the air pipe connection as a tell tale of where the oil originates or at least if it is from the connection or below it.

On earlier versions of the air intake pipe work with the organ pipe resonators there is a breather pipe from the camshaft that enters the main pipe and introduces oil. The oil is then leaking out at the joint secured by the jubilee clip above the oil stain, (if you have the breather pipe).