Noisey Whirring Rear Diff??

[GanGrene]

Over the past few weeks ive notice that my rear diff has become a tad on the noisey side and its got to the point its doing my head in.

What could be the issue?

I've been out this morning and changed all the diff fluids and its still the same.

[Gamedawn]

Most likely candidate would be a rear wheel bearing

[rob24]

ive just had the same problem ish anyway it started to vibrate a little and it was the universal joints on the propshaft

[sv1000spilot]

Most likely candidate would be a rear wheel bearing

Was on mine, loads of noise, then eventually the diff oil leaks out through the wheels

[GanGrene]

Whats are the possibilitys of the bearings in the diff itself going?

[rob24]

ive been told if your diff is faulty it will lock and just not move i dont know how true this is