A 4EAT transmission in an Escort/Tracer should take Mercon III. If it takes anything but Mercon III, like Mercon V, it will say it on the dipstick. So if it doesn't say, or just says "Mercon," then it takes Mercon III.
For a 1999 Mercury Tracer ( in North America ) ( DOT 3 brake fluid meeting Ford specification ESA-M6C25-A )
According to the 1999 Mercury Sable Owner Guide : ( Motorcraft MERCON-V automatic transmission fluid ) ( to confirm the type used , it should be engraved in the automatic transmission fluid dipstick )
Motorcraft MERCON automatic transmission fluid for the automatic transaxle ( according to the owners manual )
Manual transmissions dont use fluid, they use a kind of grease.
Dexron 3 will do just fine.
Mercon/Dexron or Mercon VI.
According to the 1997 Mercury Sable Owner Guide , Motorcraft MERCON automatic transmission fluid is used for the power steering fluid
According to the 2002 Mercury Sable Owner Guide : ( Motorcraft MERCON automatic transmission fluid is used as the power steering fluid )
The type of Automatic Transmission Fluid to use is engraved into the fluid level dipstick ( or indicated on the dipstick handle ) for the automatic transaxle ( transmission )