How do you check the rear diff oil level 2000 Ford F-150?

To check the rear differential oil level on a 2000 Ford F-150, first ensure the vehicle is on a level surface. Locate the differential cover and find the fill plug, typically located on the side of the differential housing. Remove the fill plug using a socket or wrench; the oil level should be just below the fill hole. If oil drips out when the plug is removed, the level is adequate; if not, you may need to add oil until it reaches the fill hole.