My 2006 F150 lip seal is leaking. (red box, ignore yellow area as this isn't my truck) I replaced and the same problem came right back. Any ideas? 2006 Model Screw
I have a 2.5" leveling kit and 3" blocks. (The leak started prior to having either installed @ 36,000 miles just outside of warranty, truck now has 56,000 miles)
Here is an example of the problem I found here on the site. Never received any responses or a solution however.