Change the oil in the differential?
2001 gassser, Ford, 54000 miles. Recently my mechanic suggested changing the oil in the rear/pumpkin/differential. Said there could be rust in there...and it would be a good PM. (anyway). I've NEV...
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If your like me and don't like climbing that far under rig - any quick change oil outfit can change the diff fluid - doesn't cost much.
