Welcome to the forums. Where is the leak coming from though?
Hopefully that was it but did they give any details about the fix, like maybe showing you a service TSB that would outline the causes and solution? As an owner I find that information like that can help although its a bit excessive depending who you ask.They changed the crankcase breather tube that connects into the right side turbo. That said that it has valves inside it. So far so good.Maybe third time will be the charm.