The problem occurs after expressway driving for 30 minutes or so. Oil pools up in the wells of the intake manifold on the V12, then after it begins to spill over into the intakes, the engine burns the oil. After the oil burns off, it stops smoking about abruptly as it started. Right now I have the intake removed from the engine. The oil seperator was bone dry upon removal.


I have two 600 mercedes right now. I drive a german spec 1996 S600 coupe as a daily driver, and it has TONS of power. Stock horsepower ratings are around 450hp.

It drinks gas, but the cool factor outweighs it.

My 1993 600SEL is also neat, but I can't drive it due to the smoking issue being unresolved. My guess is that the oil seperator is failing and allowing crankcase oil back into the intake. There is clean crankcase oil all over the insides of my intake manifold, also the oil was pulsing through my vacuum lines that were attached to the intake.

Anyone know anything about the oil seperators on these cars?