Read the tech articles, not the OLD, outdated owners manuals. Mercon V has been back-dated. One can find this info on most oil company's web pages. Read the back of a bottle of Mercon V next time you see one at the parts store. 100% compatable. A Chevron engineer told me Mercon V protects the ATX much better. Flows better when cold. Withstands torque converter pressure longer. Works the same as Mercon but with added life and protection. Those that say not to use it are not up on current information.
Type F is different kind of animal altogether. Adding Mercon or Dexron to one of these will end its life fast! Same with adding type F to a unit requiring Mercon/Dexron. Drag racers many years ago used to do this to make the ATX slam gears harder for better ETs. Who cares about the bands and clutch packs, I want to win!
So I'm getting a replacement one installed (on their dime) Monday or Tuesday. 
