I NEED TO ADD ANTAFREE IN 2001 SAMBLE. BUT IT IS FILL OF WATER. I NEED TO DRAIN WATER OUT .
DRAIN PLUG FOR WATER on 2001 Mercury Sable
Look on the bottom of the radiator, there may be one there, or there may be one on the engine block. You can also remove the bottom hose from the radiator for a few seconds to allow some of the water to drain out.