Having problems with your 2001 Ford Expedition ?
Is it nessesary to put synthetic gear oil in rear defferencial with 150k on my 2001 ford expo?
Yes you will reduce friction on your gears, Ford recommended synthetic oil in rear ddifferential. Use one quart of lucas oil . Will help keep it lubricated better and coll down.
Repair Help & Product Troubleshooting for 2001 Ford Expedition
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