Recently saw a post that described how to access the filling port on the front differential housing. I remember that reference was made to looking down through the passenger side of the engine compartment. Does anyone recall where the post was? If not, a procedure would be appreciated.

railbuff,

The fill and drain plugs for the front diff are on the driver's side. They are easily accessible without raising the truck or removing the wheel.

http://www.dieselplace.com/forum/smileys/Geek.gif

But note that they're in the side of the differential, not on the top and bottom, so they should be fairly obvious if you slide under your truck on the DS.