Originally Posted by BlueFocusSE5
Yes. Ford doesn't recommend that fluid.
Redline doesn't recommend that fluid either.
Why not just use the correct fluid? Do you have a spare $2,000 for a transmission rebuild?
Ford chooses the fluids for the MTX for what FORD plans the use of the car to be used for over the life of the car , when you change a car from its intent of getting you to work and for groceries to a performance car you then have to make other changes as well , engine oils and trans fluid is one of those changes
Change your fluids regular and it wont matter much what you put in there , they all will work , like stated I use mobile engine oil in the MTX-75 and the Getreg , I have never seen any improvement using the redline or RP lines of fluids and I am around some major teams that also have done testing and they dont use them either
To say a trans will go bad if you dont use the fluids ford says is silly as the car isnt being used for what Ford expected it to be used for