So went up under the Stang the other day to find the source of a quarter sized puddle of liquid on my garage floor. To my shock, I found a slick residue covering the entire front diff support bar and fluid splatter above the diff yoke. There's also carbon tracks on the exhaust pipes where something has dripped on them and burned black. All these mysterious marks are in the vicinity of the diff housing front/pinion input. Is this a sign of pinion seal leakage or overflow from the vent? Car(03 Cobra) has 30 or so passes on it and less than 24k miles. Everything in the driveline is stock. I don't know how long the rear has been leaking but from the looks of the carbon tracks, it's been going a while. I have a Borla catback on it now and the stock exhaust has no such marks. I do have a brief history of warrenty work on the diff cover, but nothing else.
