Ford told us NOTHING except that it would make us more money! Really? Actually, a total of two customers have asked for it despite all that point of purchase advertising.
And Ford/Lincoln-Mercury dealers have the stuff with no briefing from the reps, no pep rally, no real reasons that it would work better in your car beyond what appears on the bottle. I think it's part of preparing everyone for the longer drain intervals now specified for the newest 3.5 engine family.