How do you change the Thermostat on a 1998 Ford Windstar?

First answer correct. You may want yo drain the Radiator into a pan. At least enough so when you remove the Hose at the engine Antifreeze not go everywhere. I not sure how hard the Drain is to access, it usually on the Driver side bottom of radiator. If, you not find it just be ready for a little Antifreeze coming out and top off when everything replaced.

Also, LOOK at how the Thermostat is placed, not want to put it in backwards.
How do you change the Thermostat on a 1998 Ford Windstar?
First you follow the top radiator hose till it goes to the head. Undo the hose from the haed, take off the goose neck the hose came off. the thermostate is in there. Don't forget to use a new gasket.