Originally Posted by PandT
I always assumed that it would drain back into the engine, are you saying it does not? I never even considered that.
I wouldn't imagine it would drain back into the engine. Two reasons.
1) Pretty much defeats the purpose of a oil seperator (In a way)
2) The oil it would capture would be milky and contaminated.
If it does drain back in there. This would be an excellent reason to use a high quality oil and filter.