The green stuff
The recommended coolant type for a Ford Taurus is the green coolant. There are several different brands such as Prestone.
5W-20 , according to the Owner Guide
Consult the owners manual for that info.
134a is the refrigerant used by most vehicles made after 1995
D O T ( 3 ) brake fluid
The 1998 Ford Taurus Owner Guide shows : Motorcraft MERCON - V , automatic transmission fluid For the AX4N and AX4S automatic transaxles
The 2003 Ford Taurus has a 4-speed automatic.
The 2005 Ford Taurus has a 4-speed automatic.
The 2008 Ford Taurus has a 6-speed automatic.
The 2007 Ford Taurus has a 4-speed automatic.
The 2001 Ford Taurus has a 4-speed automatic.
The 2006 Ford Taurus has a 4-speed automatic.