You need to pull the diff apart, remove the carrier. You then have to have the clutches replaced in the limited slip carrier. It isn't a fun job. Alot of people try and add an extra shim in the clutch pack to make it hold more power and last longer.
You need to pull the diff apart, remove the carrier. You then have to have the clutches replaced in the limited slip carrier. It isn't a fun job. Alot of people try and add an extra shim in the clutch pack to make it hold more power and last longer.
What he said. I did the "extra shim" trick because I was going supercharged, and so far, so good. Also, use Mobil 1 75W-90 with just a tad of Ford friction modifier if it needs it.
Since yours is already slipping try changing the fluid with some regular 75w-140 that does not contain friction modifier and don't any at all to it. The friction modifier actually helps the clutches slip a little to keep from chattering around corners. If yours are on their way out might as well try this and see if it works to help them grab better until the clutches go completely out.