Well, there is no visible blow by, but it seems that my oil gets mid way down about every 3 weeks. Granted I put about 2-4,000 miles on my car per month, and I have a turbo that adds more heat. I am using Redline 10W30 Fully Synthetic Motor Oil. My exahust is clear. :wtf: I plan on changing my oil today. It has been about 4-5,000 miles since my last one.