2002 lincoln town car needs antifreeze

if it's rusty you may want to replace it .

Coolant is usually added to the coolant reservoir.

On this vehicle if you're changing the coolant or replacing the coolant after a repair the cooling system is refilled directly through the engine. Remove the thermostat housing with the upper radiator hose attached. Remove the thermostat. Remove the cap from the plastic coolant recovery tank. Pour the coolant into the hole where the thermostat goes. Once the engine is full, put the thermostat back in and reattach the thermostat housing. Top off the coolant recovery tank. Start the engine. As the engine warms up the coolant level may drop down. Keep topping up the recovery tank until the level stops going down. Be patient, it could take as long as 30 minutes. Then put the cap back on and you'll be all set! Hope that helps! Jim