So i just purchased a 2004 wrx 107k miles one female owner (she took care of it)
as i was stripping some things to get a feel for what the condition is inside i started at the intercooler.
the first thing i noticed off is when i pulled the hose off that connects to the metal tube running from one end of the intercooler to the other.
there is heavy oil gunk residue in the hose. it looks like a mixture of water and oil.
looking into the turbo air outlet there is a light film of clean engine oil.
is this an internal turbo seal going bad?
what exactly is the tube running across the intercooler for, engine oil for turbo? air?
could a bad pcv valve make it this far internally?
whats going on?