I guess that I should have added that I don't feel that break in is needed, but if you do, use a quality oil without it being the most costly. Many seem to think that there is a need for break in is needed with a Torsen. I don't know, I have not invesitgated it.
It may be true that Ford Honey is current factory spec for the MTX-75 but I'm not convinced that it is the only appropriate fluid. Sorry, but I don't worship at the alter of Ford Engineering. I'm also convinced that I will stay away from Red Line MTL since it has shown to be questionable.
Lets not go down the road of that "everlasting" thread again about which is best. There are many that should work great. Red Line is very questionable. There have been no complaints about many others, such as Royal Purple, Pennzoil, Torco, and Specialty Formulations.