To correct a previous post in this thread, Mark Kovalsky is no longer with Ford and is back on line. I personally asked him if the new stuff was OK to now use and this is what I posted in another thread on this site.
There is an expert named Mark Kovalsky that I met on line years ago that was a Ford tranny engineer. He no longer works for Ford but he says its now OK to use the new Mobil 1 because it has been reformulated. He has more knowledge about the 4R100 than anyone I have read. I would trust his statement that he wrote a few weeks ago on another site. He says, "go for it. Use it." On the other hand, I have 18 qts of the old stuff on my shelf and I probably will stay with it.
Jim