Dampening rear whine

[xartic]

So i was wondering if I used a sound dampener in the rear part of my explorer on the floor boards, would it make the noise from the rear end be quieter?

 

[abarkl]

Why not just fill the differential with a little saw dust!

 

[xartic]

i was wondering if this would dampen the noise

 

[Timoteo]

You could try a refill of 75w-140. That is what Ford spec's on a TSB for this issue. The factory fill was 75w-90. Make sure there are no leaks, many folks seem to have this issue. Maybe your empty.