Hello

I drove to NY about two weeks ago. A pillow fell from a truck and went right under the car. Somehow the pillow got stuck in the drive shaft. The cotton and stuff was gone but the cover was really tightened around the drive. I had to use pliers to get it out (kind of ripped it piece by piece). It got stuck right where the drive goes into the differential. I did not have a leak the same moment. I have put 2000 miles since that day. Apparently I have had a leak for some time. The other day changed the differential oil. There was some oil (low) on the differential when opened the plug. I filled it up with fresh oil and now I am noticing a good size drop everywhere I stop. I think I have damaged the seal. It is not leaking from the axcels. Any fluids recomended to stop the leak ? or Has anyone ever tried to replace the seal...Any ideas.

Thanks for your help