The Fleetguard DCA60L Cooling System Additive DCA4 is a high-quality product manufactured by the trusted brand 3M in the United States. This pack of 12 cooling system additives is designed to effectively improve the performance of cooling systems, specifically those with spade terminals and a gauge size of 16-14 AWG. With its proven track record and reliable brand reputation, this product is sure to provide the necessary additives for optimal cooling system function.