turning both ways, or only one? maybe bearings.check for play by jacking up and wiggleing the tires.

I run mobil 1 75-90? gear oil in my rear end.

half shafts- look to see that the boots aren't torn.

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1984 123.193 372,xxx miles, room for Seven.

1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven.