Zerex Asian Vehicle Blue 50/50 Prediluted Antifreeze/Coolant 1 gal — Silicate & Borate Free HOAT, OEM-Approved

Zerex Asian Vehicle Blue 50/50 Prediluted Antifreeze/Coolant is a silicate- and borate-free HOAT formula made for Asian-brand engines, ready to pour without mixing. Zerex from Valvoline supplies an OEM-approved blue coolant engineered for vehicles that specify a silicate-free, phosphate-containing Hybrid Organic Acid Technology (HOAT) fluid. This one-gallon prediluted 50/50 mix comes ready to use, offering freeze and boil protection plus corrosion control for aluminum and other metals commonly found in Asian-engine cooling systems.

How does Zerex Asian Vehicle Blue protect my engine's cooling system?

The HOAT chemistry uses organic acids alongside a targeted phosphate additive to slow corrosion and prevent scale that can block coolant passages. It’s formulated without silicates or borates, avoiding deposits that sometimes harm seals and water pump surfaces.

• Phosphate additive guards against rust and scale buildup in radiators and passages
• Long-life formula extends protection up to 5 years or 150,000 miles in many applications
• Free of silicates, borates, amines, nitrites, and 2-EHA to reduce deposit formation

Is this coolant compatible with my Asian make vehicle?

Zerex Asian Vehicle Blue is specifically blended to replace OEM blue coolants used by manufacturers like Honda, Nissan, Infiniti, Hyundai, KIA and others that call for silicate-free HOAT fluids. It meets several industry and manufacturer specifications to ensure fit and performance.

• Formulated to match Asian OEM blue-fluid requirements
• Meets Hyundai/KIA MS 591-08, Mitsubishi ES-64217, and JIS K 2234 among others
• Also complies with ASTM D3306, D4985 and Ford WSS-M97B55-A where applicable

Do I need to dilute this product before use?

No mixing is necessary: this product is supplied as a 50/50 premix of coolant and deionized water. That saves time and ensures the correct freeze/boil protection and inhibitor concentration straight from the bottle.

• Ready-to-use 50/50 formulation—no water required
• Pre-measured inhibitors maintain recommended protection levels
• Includes bittering agent (denatonium benzoate) for safety handling

What routine maintenance steps should I follow when using this coolant?

Keep the cooling system clean and monitored: check levels, inspect hoses and clamps, and replace coolant at intervals suggested by your vehicle maker or when contaminants appear. Flushing the system before refilling helps remove old deposits so the new HOAT formula can work optimally.

• Inspect coolant level and top off with same product when needed
• Flush system if switching from a different chemistry to avoid reactions
• Replace at recommended service intervals or when degradation is detected

Who is this for: Zerex Asian Vehicle Blue 50/50 Prediluted Antifreeze/Coolant is intended for owners and technicians of Asian-brand cars and light trucks that specify a blue, silicate-free HOAT coolant. Choose this one-gallon premix when you want an OEM-aligned formula that protects aluminum radiators, water pumps, and other cooling-system metals while avoiding silicate- and borate-related deposits. It’s suited to do-it-yourself maintenance, professional service bays, and fleet operators who prioritize correct chemistry and long-lasting corrosion control.

FAQ

Q: Can I mix Zerex Asian Vehicle Blue with other coolants?

A: Mixing different coolant chemistries is not advised. If switching, flush the system first to avoid chemical incompatibility and deposits.

Q: What protection level does the 50/50 premix provide?

A: The 50/50 premix delivers balanced freeze and boil protection plus corrosion inhibitors suitable for most climates and Asian OEM requirements.