differential tube vent
I have a 1999 grand marquis with 130,000 miles on it. While doing an inspection of the underbody the other day, at first I thought the seal was leaking on the diff. cover. When I went to replace/fix said seal, I noticed that the fluid is coming out of the vent tube. After looking around on the floor and driveway, I have left quite a few spots around from the fluid leaking out of the vent tube. I have not had any service done to the differential. Any thoughts or suggestions. I have asked several of my weekend warrior friends and they were stumped. Thanks All!