Leaking Intake manifold?

Hi,
I think i have a leaking intake manifold. Oil down the nearside of the engine block runs all the way down to the exhaust! Not loosing any oil from the engine and performance is fine actually very good!!!!!
Local garage told me it is a breather pipe of the turbo and all 300TDI's do it and not to worry about it!!
So what it is it to be? a leaking intake manifold or a breather pipe and do i need to word about it or just add it to the to do list???

turbo doesnt have a breather pipe nmanifold gaskets are prone for leaking though

big problem? or liveable?

The breather pipe he's on about is from your rocker cover cyclone breather to the turbo air inlet. They do leak, check it out