I don't mean to open this "Can-Of-Worms
BUT, before you make the decision to use Mercon V (something your owners manual specifically
warns Against) do a little research and see that there are many others opinions that you should actually stick with DEX-III.
I know, I know, FORD has now decided it's actually OK and their original engineers warning was wrong,,,, BUT many of us feel it was in the best interest of FORD, Not YOU, when the "bean counters
" (who, I'm sure know less than the 4R100 original designers) made that call.
YOUR Trans, YOUR decision, play it safe or gamble (as apparently Many others have done without concrete evidence of disaster)
All I'm sayin',,, Everybody should just be aware..........