The noise does not sound like either videos, but I only hear the noise when I turn the steering wheel like the guy on the second video did. Also, mine is not leaking any fluid. I've also heard about checking my wheel bearing so i'll give that a try as well.

 

Maybe the Pitman arm???

 

Greased the pitman arm and the idler arm...no luck. My idler arm did look like **** though.

 

This is what my truck sounds like when I turn the wheel left and right while it's stationary...sorry that the video was done at night and the volume is a little low.