how hard is it to install a pinion seal

Stang01GT

New Member
Apr 20, 2003
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New Jersey
Last time I got my oil change at my friends shop he told me that there was fluid all around my rearend, mufflers and pipes. Its not comming from the pumpkin, its comming from right before it where the driveshaft connects. Anyway I heard it could be my pinion seal, my question is how hard is it to replace, if its somewhat easy im goin to try to replace it myself.