Noisy rearend 69 barracuda 318 car

Axle bearings are not lubed with rear ends 90w. Remember the axles have an inner seal to stop the 90w. Axle bearings are packed with wheel bearing grease. Just a side note to diagnosing rear end noise, cupped tires cause the same noise. Had a customer come in to rebuild his noisy rear end. Indeed there was a terrible rolling noise coming from the rear end. Noticed that the rear tires were cupped, so I rotated them to the front. Surprise! the noise was now in the front. The dealership was pissed that they lost the job.