I have a 96 F150 5 speed with the mazda tranny, the case is aluminum. Everything that I am reading says that it takes Mercon V Automatic Tranny Fluid, whereas the ZF5 takes gear oil. I went and bought ATF and drained the fluid out, and the fluid that came out smells like gear oil. I don't know if it is supposed to take gear oil or if the PO used the wrong type of fluid in it.

Fast help is appreciated, I have the fluid out right now and need to drive my truck soon, I don't want to use ATF if it will hurt the tranny.

 

Going to use the ATF, according to this post https://www.ford-trucks.com/forums/2...nsmission.html that is what it takes. An admin can take this post down or leave it up for future reference, I had to search google to find the thread that helped me.

https://www.ford-trucks.com/forums/2...nsmission.html
https://www.ford-trucks.com/forums/2...nsmission.html
https://www.ford-trucks.com/forums/2...nsmission.html