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Old 12-16-2012, 08:30 PM   #18
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Join Date: Oct 2012
Location: Pittsburgh PA
Posts: 371
My Ride: 03 325xi and 04 330x
Cylinder leak down test only tests the compression rings. Oil rings are a completely different story.
I too am using some oil. 1 qt~800 mi. I have MOA at my shop and I am going to give it a try.
Normally bad valve stem seals will give you a puff of blue smoke at start up. I don't have this.
I am suspecting oil rings.
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