Strange noise during idle...

[Twisted]

Looking at the parts diagrams, 2004 is when they started adding a spring washer to the cam shafts.
Cam noise should not be happening 2004+.

My 2004 has camfloat end noise. I was sure it was 2005 on they fixed the issue

Mine becomes more pronounced when I use a thicker oil other than the specified 10-40w

[The Buddha]

Mine becomes more pronounced when I use a thicker oil other than the specified 10-40w

Oww weird, maybe 10w40 gets into the little crevasses better ...
My 48K GS actually used the least amount of oil with regular castrol 20w50. I even ran 60 weight valvoline. It still used the least amount when running 20w50. And I heard synthetic is much slipperier and it gets past rings, seals and guides a lot better.
And the conventional oil is supposed to cushion better - as in it sticks in a thicker film on tappets and cams and helps with impact.

You have one of those versions happen to you.
Cool.
Buddha.