Ford Taurus 1999 81000 miles

Dear Rich,
The drain plug is on the bottom of the radiator in either corner. Is tough to find but it is there. Sometimes on the bottom side. (Facing the engine )Also sometimes on the bottom of the car there is a plastic shield cover, obstructing the location of the drain plug. If you remove the shield it will make it easier to get to the drain. If all else fails you can remove the lower hose to drain the radiator. Don't recommend doing this way. Very messy and does not drian the system as well.
Good luck Backyardmechanic :)