VK56, Did you ever find anything out on this? I'm worried I am having the same problem. I purchased a 04 T yesterday with 206k and it sounded like that this morning (my first cold morning start). Sounded very different than when it is warmed up. Sound went away after 6 or 7 minutes of idling in the drive. Do these motors need the timing chains replaced? It just had Jiffy Lube oil change 1k miles ago, but wondering if getting another oil change with synthetic would be a smart idea. It may already have synthetic in it, I have no idea.