Zerex Asian Vehicle Blue Silicate and Borate Free 50/50

Zerex Asian Vehicle Blue is a 50/50 prediluted, silicate- and borate-free HOAT antifreeze/coolant formulated for Asian-made cars to protect cooling systems from corrosion, freezing, and overheating.

Designed and manufactured by Valvoline, this ready-to-use 1 gallon formula matches the blue OEM coolant required by many Asian automakers including Honda, Nissan, Infiniti, Kia and Hyundai. Its Hybrid Organic Acid Technology (HOAT) with a phosphate additive prevents corrosion and scale in radiators, water pumps and other cooling system metals while eliminating silicates, borates, amines, nitrites and 2‑EHA. Use it to top off your radiator or after a full system flush for long-lasting protection.

Which vehicles and systems is this coolant compatible with?

Zerex Asian Vehicle Blue is engineered to meet the blue, silicate-free coolant specifications used by many Asian OEMs. It replaces or tops off factory-fill fluids for models that require a phosphate HOAT blue antifreeze/coolant.

• Recommended for Honda, Acura, Nissan, Infiniti, Hyundai, Kia and other Asian brands specifying blue HOAT fluid
• Compatible with aluminum, brass and other common cooling system metals
• Meets OEM and industry specs like Hyundai/KIA MS 591-08, Mitsubishi ES-64217 and JIS K 2234
• Ready-to-use 50/50 prediluted mix—no mixing with water required

How does this formula protect the cooling system over time?

The HOAT chemistry combines organic acids and a phosphate additive to inhibit corrosion and reduce deposits that degrade heat transfer. Its long-life formulation helps maintain coolant flow and prevents scale that can cause overheating or leaks.

• Long-life protection rated up to 5 years/150,000 miles under proper conditions
• Phosphate additive reduces corrosion and protects aluminum components
• Silicate- and borate-free to minimize harmful deposits and gasket issues
• Bittering agent included to discourage accidental ingestion

When should I choose this prediluted 50/50 solution versus concentrated coolant?

Choose the prediluted 50/50 mix when you want convenience and assured freeze/boil protection without measuring or adding distilled water. It’s ideal for topping off or refilling systems when the OEM calls for a premixed blue HOAT coolant.

• Use directly from the gallon for immediate service—no dilution needed
• Best for DIY maintenance, quick top-offs, and service bays that prefer ready-to-use fluids
• If your vehicle specifies concentrate, follow the OEM dilution instructions instead
• Prediluted mix guarantees the correct freeze and boil protection at the labeled ratio

What industry standards and exclusions should I be aware of?

Zerex Asian Vehicle Blue meets multiple OEM and ASTM specifications relevant to Asian vehicles; it intentionally omits silicates, borates, amines and nitrites found in some other coolants. Verify your vehicle owner's manual to confirm color and chemistry requirements before switching fluids.

• Conforms to ASTM D3306, ASTM D4985 and Federal Specification A-A-870A among others
• Meets Hyundai/KIA MS 591-08, Mitsubishi ES-64217, JIS K 2234-1994, Ford WSS-M97B55-A
• Does not contain silicates, borates, amines, nitrites, or 2‑EHA
• Always cross-check OEM recommendations before replacing factory coolant

Who is this for: Zerex Asian Vehicle Blue 50/50 prediluted coolant is for owners and technicians of Asian-brand cars that require a blue, silicate-free HOAT antifreeze—especially those who want a convenient ready-to-use gallon that protects aluminum radiators and other cooling system metals. It’s suited for routine maintenance, system flushes, and topping off to maintain reliable engine cooling performance.