PRODUCT DETAILS ACDelco Coolant is an silicate and phosphate free, premium-grade coolant with a chemical composition that reduces breakdown of metal components in contact with the fluid. Based on carboxylate technology, ACDelco Coolant has the properties needed to optimize the efficiencies of the new hybrid vehicles. This product is acceptable for use in all vehicles that require Dex-Cool coolant. Perfect for on the go situations, ACDelco Coolant comes pre-diluted with specially filtered water and is ready for instant use. Warning: Automobile parts, accessories and ancillary chemicals contain chemicals known to the state of California to cause cancer, birth defects and other reproductive harm. Wash hands after using. WARNING: DO NOT ADD WATER.