ACDelco Dex-Cool Extended Life Coolant 50/50 Premix

ACDelco Dex-Cool 50/50 Premix Coolant/Antifreeze is an orange, 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 Dex-Cool 50/50 Premix Coolant/Antifreeze 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 and comes pre-diluted with specially filtered water and is ready for instant use.


  • Specially formulated for long service intervals, the coolant can last up to 5 years or 240,000 kilometers. Maintenance needs vary with different uses and driving conditions. See your owner's manual for more information.
  • Provides effective long-term anti-corrosion support by protecting brass, cast iron, steel, solder, and copper components. Also provides superior high-temperature protection for aluminum components.
  • Non-silicate formula retains excellent heat transfer characteristics for improved water pump life.
  • Long shelf life: storage-stable for 8 years.
  • Backwards compatible formula can be used with conventional cooling systems.
  • Must be replaced every 2 years/50,000 kilometers whenever used in a vehicle not originally designed to use Dex-Cool.


Your engine overheating could be a sign of:

  • Low levels of engine coolant.
  • Problems with coolant flow.
  • Incorrect concentrations of water to coolant.


  • Keep your cooling system full with the recommended amount of coolant. See your owner’s manual for information regarding individual vehicle coolant type and fill amounts.
  • Eliminate all air that could be trapped in the cooling systems as it causes poor heater core performance and potentially can cause premature failure.
  • Maintain the correct cooling system pressure as indicated by your vehicle’s manufacturer, as additional pressure increases the coolant boiling point.
  • To achieve top performance and service intervals from Dex-Cool, do not mix the fluid with traditional coolant/antifreeze. According to the Dex-Cool manufacturer, mixing reduces the batch’s change interval to 2 years or 50,000 kilometers, though it will not cause any damage to the engine.


Q: Can coolant color be used to determine what product I can use?
A: No. Coolant color can no longer be used to determine the correct product to add to your system because coolant suppliers no longer have common product color standards. Instead, determine what is the correct type or specification of the product you require and purchase the product with this correct specification.

Q: Is there a specific type of antifreeze I should use in my vehicle?
A: Yes. See your owner’s manual or service guide for information regarding your vehicle’s fluid requirements.

Q: Do I have to change my vehicle’s antifreeze?
A: Yes. Your owner’s manual or service guide will provide more information regarding vehicle-specific maintenance intervals.

Q: Is it okay to use ACDelco Traditional Coolant in my engine if it requires Dex-Cool?
A: No. Each vehicle is manufactured for use with a specific coolant formula. If your vehicle was not designed for use with traditional coolant/antifreeze, or coolant not recommended by your vehicle’s manufacturer, it can potentially harm your cooling system.