Check the "O" ring on the fill/dipstick tube. It's notorious for seep leaks, especially if the bracket where it bolts to the bellhousing is broken off the tube, or it's just not bolted on. Later models have a rubber sleeve in that position rather than an O ring, and switching to the later model tube and seal is the best fix. Ditto on the shift shaft seal, it gets forgotten pretty often. Stay away from the Blue Glue!
Jerry
