I found a good post about it here on this forum with photos etc - very helpful to diagnose the problem,

Driving Our Sportbrake S 2013 (3.0 V6 Diesel) back from France, the engine went into self protect mode – restricted performance. Here is the leak:



Looked at it – here can see oil leaking out from under Induction manifold (passenger side) part no C2S52756

2 questions:

1. Does anyone do an upgraded version of this (metal not plastic) - many threads re failure - surely someone must have one less prone to cracking?
2. Can anyone recommend a good dealer in Bucksinhamshre (wee live near High Wycombe) - we normally use the Main Dealer - but this may be expensive - based on other posts on this forum

Appreciate any quick replies as need to get this fixed asap. We've had the car from new.