Contour Enthusiasts Group Archives Forums Modifications Transaxle Clutch Overhaul & MTX75 Upgrade

1. No differential seal
2. Use the quality Permatex RTV black in the really small tube, available at Autozone or similar in a cardboard and plastic package ~$4.50 a tube, one tube is sufficient for the whole transmission; or use the Ford required sealant. Don't use standard RTV Silcone (like blue or orange) with the trans, especially if running ATF dino or synthetic.

3. There are only three seals, one input and two output. One is the input shaft seal that is integral with the clutch slave cylinder. When you replace the slave you replace this seal automatically. Make sure to use a bead of the same RTV sealant when installing the slave, or use an o-ring. (Ford manual cites a bead of sealant)
Output seals are the axle shaft seals. They are the same part number. Don't remember the part number but just get two replacement axle shaft seals.

4. See answer to number three.

Recommendation. Don't use the cocktail anymore with a torsen. Use Redline MTL if in moderate to cold climates. Penzoil synchromesh fluid seems to do OK with DemonSVT. Royal purple MAXGEAR works great in the south in the summer, NOT good for cold morings anywhere else though. Pretty much can't go wrong with the redline MTL or similar GL-4 gear oil. YOU NEED at least a GL-4 gear oil, or a GL-5 listed as not harming bronze synchros i.e. "yellow metals" by the manufacturer in order to provide the best protection for your torsen under heavy torque loads and to keep it quiet.