@
BeeAreZee
You can't receive private message so I am posting my response here.
I started hearing the knocking maybe...at 11,000 miles. Didn't think much of it, I thought it was normal.
I was in Park and I only heard it when it was warm, it was sometimes as well. I didn't hear it while driving.
HOWEVER -- the dealer caught it when it was cold and they caught TWO odd noises. They heard more than me which led to an engine tear down. The second noise is a noise I'm not familiar with or didn't catch so I can't tell you what to listen for.
Currently I'm getting my head/engine rebuilt and my valves adjusted.
Feel free to ask any other questions.