How about the exhaust manifold bolts...there were issues of them snapping and causing the "tick" in the earlier 4th gens and it'd disappear after the engine would warm up.... I'd assume that this would be fixed by 2012 but we all know what happens when you assume! ...I know it only has 4400 miles on it but you never know...worth a crawl under and taking a peek.

 

Mine got more quiet when I switched from Mobil 1. I now use Pennzoil Platinum, or Pennzoil Ultra, and the engine is much more quiet. I hear Valvoline Synthetic will do the same thing.

No more Mobil 1 for me!