Yes.
Since about the mid-90's more cars have eliminated the traditional radiator cap.
All coolant / antifreeze goes through the "reservoir" (it's more than that nowadays).
See "Related Questions" below for more
Any SAE certified antifreeze can be used in your 1997 Ford Taurus. The automaker recommends that you use an anti-freeze that is rated for -35 degrees.
It is overdue to be changed.
According to the 1997 Ford Taurus Owner Guide : It came from the factory with a 50 / 50 mix of distilled water and GREEN color antifreeze ( meeting Ford specification ESE-M97B44-A )
by adding more gas I'm weak on Fords, but radiators are filled either at the radiator or the overflow bottle. The overflow bottle will be marked coolant only.
A 1997 Jeep uses the regular green antifreeze.
How much antifreeze is in a 1997 Honda crv
were is the shift module on a 1997 Ford Taurus
there it is http://mywiperblades.com/1997-ford-taurus-wipers.htm
It takes the green Antifreeze
Green
One gallon of antifreeze mixed with half water
On a 1997 Ford Taurus the thread on cap on the engine coolant reservoir is the pressure cap / radiator cap