Valvoline Zerex Dex-Cool Antifreeze Coolant Concentrate 1 Gallon Orange OAT Aluminum Corrosion Protection

Zerex Dex‑Cool Antifreeze/Coolant Concentrate (1 gallon) is Valvoline’s orange OAT formula designed to protect passenger cars and light trucks from freezing, boiling and corrosion when mixed per instructions.

Built on patented carboxylate chemistry, this concentrate is formulated for vehicles that specify an orange, Organic Acid Technology (OAT) coolant. It is engineered to safeguard radiators, water pumps and other cooling system metals — including aluminum — and is compatible with many GM, Ford, Chrysler and Saab models that require Dex‑Cool or equivalent OAT antifreeze. The product is a concentrate you mix with water to achieve the freeze and boil protection your climate demands.

How do I mix Zerex Dex‑Cool for my climate?

Mixing this concentrate with clean tap or demineralized water sets the protection range. Different ratios change the freeze and boil points so you can tailor protection for seasonal temperatures.

• 50/50 (antifreeze/water): protects approximately −34°F freezing to 265°F boiling.
• 60/40: extends freeze protection to about −62°F and boiling to 270°F.
• 70/30: for extreme cold with freeze protection near −84°F and boiling around 267°F.
• Always use clean water and follow vehicle manufacturer dilution instructions.

Will Zerex Dex‑Cool harm seals, hoses or aluminum components?

No — this OAT concentrate is free of silicates and phosphates and avoids amines, borates, nitrates and nitrites that can accelerate wear in some systems. Its corrosion‑inhibiting additives are formulated to be gentle on gaskets, hoses, plastics and painted surfaces while protecting metals.

• OAT chemistry resists rust and scale buildup on metal parts.
• Designed to protect aluminum radiators and water pumps.
• Additives help reduce leak‑promoting deposits and maintain proper coolant flow.
• Batch‑tested for compatibility and fleet‑tested in real operating conditions.

How long does protection last and what warranty applies?

Zerex Dex‑Cool concentrate delivers long service life when mixed correctly and maintained according to vehicle schedules. Valvoline backs the formulation with a time and mileage assurance tied to freeze/boil related engine damage prevention.

• Typical service life supports multi‑year performance; follow vehicle manufacturer intervals.
• Includes a 5 year/150,000 mile guarantee against engine failure caused by freeze‑ups or boil‑overs.
• Batch testing in labs and real‑world fleet trials underpin durability claims.
• Contains a bittering agent (30–50 ppm denatonium benzoate) for safety.

Is Zerex Dex‑Cool the right choice for my car or truck?

Choose Zerex Dex‑Cool when your owner’s manual specifies an orange OAT antifreeze or lists Dex‑Cool compatibility. It’s formulated to meet the needs of many GM, Ford, Chrysler and Saab cooling systems and is suited for both topping off and full coolant replacement when an OAT product is required.

• Recommended for vehicles calling for orange OAT/Dex‑Cool coolant.
• Suitable for passenger cars and light trucks when used per manufacturer guidance.
• Use for routine top‑offs or full flush and refill procedures.
• Not intended to be mixed with incompatible coolant chemistries without proper system flushing.

Who this is for: Valvoline Zerex Dex‑Cool Antifreeze/Coolant Concentrate is aimed at vehicle owners, DIY mechanics and service shops that require an OEM‑approved orange OAT coolant. If you drive a car or light truck specifying Dex‑Cool or an equivalent organic acid coolant, want strong protection for aluminum cooling components, and need flexible mixing options for varied climates, this concentrate is built to meet those needs when used according to the vehicle manufacturer’s instructions.