Not sure about the numbers Wazza,
But there is an issue with pinion seals going in the diff, so that could be it. Causes a weep. Early diffs had a problem with paint causing the seals to deteriorate, but I beleive later models also had pinion seal problems (maybe from harmonic vibrations)
They used to just replace the entire unit, but now I believe a kit is available just to replace the seals.
Warranty.


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