oil in boost hoses is most definately turbo oil seals gone.
I have to keep an eye on mine.
One of my old escorts done something I still can't figure out.
It was a normal 1.6cvh and I was thrashing it along a straight and the next thing I know the oil light comes on and the engine rattles like fuck. Didn't see any smoke or hear anything happen.
Limped it to petrol station, let her cool and checked dip stick and no oil. Filled it up with oil again then it was fine and never lost a drop the rest of its life.
some things just happen with cars and they fix themselves lol