Ford 2003 Mustang Workshop Manual page 1667

39. CAUTION: Do not use metal scrapers, wire brushes, power abrasive discs or other
abrasive means to clean the sealing surfaces. These tools cause scratches and gouges
which make leak paths. Use a plastic scraping tool to remove all traces of old sealant.
Remove and discard the gasket. Clean and inspect the sealing surfaces.
Installation
All vehicles
1. Position the engine front cover gasket on the engine front cover.
2. NOTE: If the engine front cover is not secured within four minutes, the sealant must be removed
and the sealing area cleaned with metal surface cleaner. Allow to dry until there is no sign of
wetness, or four minutes, whichever is longer. Failure to follow this procedure can cause future
oil leakage.
Apply the silicone gasket and sealant along the cylinder head-to-cylinder block surface and the
oil pan-to-cylinder block surface.