WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Clean all sealing surfaces with metal surface cleaner.
Apply clean engine oil to the seal lip and seal bore before installing the seal.
Using the special tools, install the crankshaft rear oil seal.
Fig 1: Identifying Special Tools (303-384 And 303-178)