Hi everyone,
I recently swapped out a blown engine on my nieces car (2002 S60). Everything's all in and I'm just finishing the plumbing and I've noticed this area that looks like a nipple that should have a hose attached. I've searched but can't find a hose for it. It's part of the oil cooler system at the rear of the engine. I've highlighted it in the attached pick. Does anyone know what should be attached to this?

Thanks in advance.

 

For those that are interested, I found out that this pipe is a bleed and doesn't have any connections on it.