Leak to worry about?

[stevegto3]

Hi all

I have a A4 avant 2.0 tdi 2009.

Ive noticed that there is a coating of dark oil substance coating some areas and then when i reach my hand under its quite fluid.

The area is under the part that connects the intake to the manifold, is this the EGR valve?

The independent garage I use said do worry about it and is normal. Im not too sure.

Ive read about removing the EGR valve and cleaning itand changing the gaskets.

Has anyone had similar issues or is it nothing?

Thanks
Steve