Hello, The most common place for these engines to leak is the turbo pedestal. This is the mounting base for the turbo. It is best replaced as an assembly. There is a repair kit available for it, but it usually doesn't last very long when rebuilt in field. Here is a picture of the pedestal. Thanks
What should this repair costs at a repair shop instead of doing it myself? What does the assemby include versus a repair kit? I could not see the picture probably due to my security software.