Emulsion occurs when water gets into the oil. The M103 and M104 engines are known for their head gasket failures. At the rear of the gasket the water and oil passages are very close. When it fails oil gets into the water. It usually does not dump water in the cylinder nor does compression pressure get into the water jacket which will blow the coolant out.
The danger in driving like this is that the oil will soften the coolant hoses making them prone to bursting.
Sometimes the oil will leak to the outside line between the head and the block and since the engine is leaning 15 degrees the oil will not puddle under the car. The oil will drip into the slip stream and get blown along the underbody.
Last edited by Robby Ackerman; 12-28-2002 at 07:53 PM.