Eaton Tru-Trac differential

I've used the Eaton True-Trac bought from Dr Diff in my Dart for about 6 years and it's been flawless on the track and the street. I like the fact that it doesn't use friction modifier or synthetic fluids.

https://www.eaton.com/us/en-us/prod...rket-differentials/detroit-truetrac-faqs.html