Antifreeze additive is a type of chemical used to lower the freezing point of a liquid, usually water-based solutions. The crossword solutions for this term include methanol (8 letters), WINTERIZE (9 letters), glycol (6 letters), glycols (7 letters), deice (5 letters), Prestone (8 letters), COOLANT (7 letters), and methyl (6 letters). These chemicals are often used in car radiators and other cooling systems to prevent the liquid from freezing in cold temperatures.