Volvo: Volvo S40, volvo s40, breathers

Question
I have a 1996 Volvo S40 that leaks oil through the dipstick filler hole.I have had the breathers cleaned by a local garage but the problem remains.
Could you please suggest a possible cure.

Answer
Geoff,
There is a breather box under the intake manifold. That breather will need to be removed and cleaned out. If that is the breather that has been cleaned, you might be having a blowby problem, weak engine have the compression and cylinder leakage checked.