Hey there, I've finally put my 2007 Nissan Navara 2.5L Diesel Auto Spain engine back together. Near the driver's side wheel arch there is a pipe running down from the coolant system, there are no left over hoses anywhere and i'm not sure where it would run to anyway or as there are no other open pipe I'm aware of, any help would be awesome please. The pipe is the metal one on the left of the photos facing down with no hose attached. Thanks