Which way thermostat gos in a 1993 aerostar 3.0 engine?

In a 1993 Ford Aerostar with a 3.0 engine, the thermostat should be installed with the spring side facing the engine block and the wider end facing the radiator. This orientation allows the thermostat to open properly when the engine reaches operating temperature, ensuring efficient coolant flow. Always ensure the gasket is in place and secure the thermostat housing properly to prevent leaks.