75w90. If it has limited slip, additive is required.
An internal failure in the axle. It will need disassembled to know the actual cause.
Yes
Inside the rear axle.
It is on top of the rear axle.
Top of the rear axle.
75w90
It is on top of the rear axle.
It is on top of the center of the rear axle.
It is on the top center of the rear axle.
Top of the rear axle.
Top of the rear axle.
It is on the top center of the rear axle.