I was one of the lucky ones with a truck that produced oil. I have not read a post that actually verified the root cause of this issue so I am starting a new thread. I took my truck in for the 2nd time to a different dealer and I got a response I liked.:$: The diesel tech said that he noticed a noisy injector (cracked or leaky) and said that this was most likely the cause of the problem. Next Friday I take it in, they are going to replace the noisy injector and test/inspect the others. I will keep you all posted on what actually happens and what they find.