R-12
The 2004 Ford Taurus has overhead valves (OHV).
R134 or 134R its the same obviously. That's the only freon I know of besides the old stuff you cant get anymore.
The transmission fluid for the 2000-2004 Taurus is MERCON V.
The 2004 Ford Taurus Owner Guide shows ( 5W-20 ) for the 3.0 liter Vulcan and 3.0 liter DOHC Duratec engines
R-134a Can be found in any auto parts store / Wal-mart, etc
The Freon is added through the low side ac port. Using the proper type of Freon and a gauge, fill the system to the recommended pressure.
The refrigerant you need is R-12 (the older very expensive) type. Most domestic cars through 1994-1995 use this type.
freon for 1999 ford explorer =========================== r134a ( Helpfull )
The 2003 Ford Taurus has overhead valves (OHV).
The 2006 Ford Taurus has overhead valves (OHV).
The 2001 Ford Taurus has overhead valves (OHV).