[FleaDog]

I finally had some free time today to take the car out and get a better listen.

The sound appears to be eminating from the rear brakes (pads) by way of the emergency brake.

It went away after I drove around a good bit and really hitting the brakes. It would only recur when I stopped, and applied the ebrake. After I undid it and resumed driving - it would be right back. It also went away after I soaked the rear brakes/wheels with my hose. I guess when the ebrakes are being applied, and then released the pads are somehow not being fully released and then rubbing on the rotors.

The recurrent rear diff leak appears to be unrelated, but needs to be fixed nonetheless.

So it looks like the ebrake needs to be adjusted somehow.