Update on white smoke in exhaust after replacing oil separator valve on my 2003 x53.0i. I figured that there would be oil in the cat and muffler as it was in the cylinders. Started car last night ran it for about 1 minute and fogged out the open garage with white smoke. Shut down after a minute, and restarted 10 minutes later. Ran for about 1 minute and shutdown. Again smoke out the garage and I mean it was a white out. Ran the car this morning for 30 minutes at idle, shut down, let it cool and checked oil level, coolant level and pulled all the plugs. Everything looked good. Ran the motor again for 30 minutes and did the same routine. After the first 30 minutes smoke definitely dropped off, after second it dropped off again and now it looks like the exhaust you have on a cold day when you first start. Took the car out and went about 10 miles on the high way had it up to 80. Ran fine but each time I got on it you could see puffs of smoke. Got home and the tailpipes are soaked in oil.

Pulled plugs and they are clean and dry, oil level is full and coolant is full. I think it will take a road trip of about 100 miles or so to get the cat and muffler clear of oil. No fault lights at all during the initial failure of the valve