I am changing the slave cyl on 94 Merc Capri so am also replacing the fluid in tran so are you saying to use ford auto trans fluid part store said they had no specs on it jst want to be sure?

For a 1994 Mercury Capri, it's generally recommended to use Ford Type F automatic Transmission Fluid. However, some sources also suggest that you can use Mercon or Mercon V fluid, as they are compatible with older Ford transmissions. Always check your owner's manual or consult a Ford dealership for the most accurate specifications. If in doubt, using Ford Type F is a safe choice.