Are you looking for a solution? Make sure you tightened everything down. Diff covers leaking is about as common as rusted bolts- it happens. As long as it's a slow seep, it's hardly worth worrying about. If it's a drip, you have a problem. Torque everything to spec, wash off the cover, and see if that helps. Gear oil stains the covers for a while- it may not even be seeping- it may just be stained- Mark W.
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