The data I have Autodata & Ford workshop manual both show a drain plug and a fill plug, the drain plug (Allen headed bolt) is just outboard of the joint between the bellhousing and the main gearbox casing and the fill plug is on the front face about halfway up the casing near the joint of the bellhousing and fill to 5~10mm below the hole level with 75W/90 synthetic total capacity 2.8l
nigel, September 2011