When I'm moving at relatively low speeds, either my tires or suspension squeals or make a loud humming sound. I know it's not the power steering pump since it makes no noise turning right or left while stationary. Someone told me that there is some lubrication that needs to be made in the differential, but I have a no clue what he's talking about. Any help would be appreciated.

Tks.

 

It could be anything from Glazed brake pads to fan belt or maybe even wheel bearings.You need to have someone help you pinpoint the location.