D 250 Pickup L6-359 5.9L DSL (1992)
Expansion/Freeze Plug: Service and Repair
CUP PLUGS - REMOVAL
Remove the cup plugs from the oil passages.
TO INSTALL THE CUP PLUGS
Apply a bead of Loctite 277 around the outside diameter of the oil passage cup plugs.
Drive the cup plugs in until they bottom in the bore.