I cannot find any information on the crankcase ventelation system! i have an oil leak and i think it might be the main seal. but im not sure yet. my flame trap is clean. its a 93 850 glt with 360 thousand km. the leak is only after the car has been running. beucase i had it sitting outfront for a week without being started and i had no oilleak. drove it 20 meters and over night it had a good splotch. always same spot its dripping from. just below where the transmission and the engine meet would be the best way to explain it. right under the top engine mount and a couple inches to the left ( sitting in the drivers seat )