Engine Block Plugs
1. Use Slide Hammer to remove the cylinder block core plug.
2. Inspect the cylinder block plug bore for any damage that would interfere with the proper sealing of the plug. If the cylinder block plug bore is damaged, bore for the next oversize plug.
3. Coat the cylinder block core plug and bore lightly with Threadlock 262 E2FZ-19554-B or equivalent meeting Ford specification WSK-M2G351-A6 and install the cylinder block core plug.
NOTE: Oversize plugs are identified by the "OS" stamped in the flat located on the cup side of the plug.