Answer
It is R-134a. You can get this just about anywhere now. Walmart, etc. Good luck.
r134
R134a
It uses R134a
R-134A
R134a
R134
R-134 should be the refrigerant as R12 was banned in 1996.
R134a
A 2001 Ford Windstar is ( r134a ) * in the front of the engine compartment there is an information sticker One of the things it shows is the type of refrigerant used in the air conditioning system
Disposable refrigerant containers are only used for virgin refrigerant.
R134a
It is 134.