Zerex Asian Vehicle Red Silicate and Borate Free 50/50

This one-gallon, 50/50 prediluted coolant is formulated to match the fluid specifications of many Asian manufacturers such as Toyota, Lexus and Scion. It uses a silicate-free Hybrid Organic Acid Technology (HOAT) with phosphate additives to protect aluminum and other cooling system metals from corrosion, scale and deposit formation while offering long service life. Always verify your vehicle’s required coolant specification before use.

Which vehicles and systems is this coolant intended for?

This product targets Asian-brand passenger cars and light trucks that specify a red HOAT-type coolant without silicates or borates. It’s designed as a direct replacement for many OEM factory fills and service fills where red, phosphate-containing HOAT is required.

• Recommended for Toyota, Lexus, Scion and similar Asian models
• Suitable for aluminum, cast iron and mixed-metal cooling systems
• Formulated to replace OEM red HOAT factory fills

How long will the protection last and what does it cover?

Zerex’s long-life chemistry offers extended protection so you can go longer between coolant services. The formula is designed to prevent rust and corrosion across cooling system metals and minimize harmful scale and deposits that reduce heat transfer and system efficiency.

• Rated for up to 5 years or 150,000 miles under typical service conditions
• Protects against corrosion, rust and deposit buildup
• Helps maintain efficient cooling and system longevity

Is the product ready to pour and safe for summer and winter conditions?

This coolant comes pre-mixed 50/50 with deionized water so it’s ready to use straight from the container — no mixing required. The freeze and boil protection are balanced for everyday drivers when used at the recommended concentration; check your owner’s manual for climate-specific guidance.

• Prediluted 50/50 for immediate use without adding water
• Provides freeze and boil-over protection at recommended concentration
• Reduces risk of harmful deposits thanks to silicate- and borate-free formulation

What industry and OEM standards does this meet?

The formula meets several manufacturer and industry specifications commonly referenced by service technicians and OEMs. This helps ensure compatibility with vehicles that call out these standards for coolant performance and durability.

• Conforms to JIS K 2234-1994 and ASTM D3306/ASTM D4985 requirements
• Meets Hyundai/KIA MS 591-08, Mitsubishi ES-64217 and Ford WSS-M97B55-A
• Also aligned with Federal Specification A-A-870A where applicable

Who is this for: This Zerex Asian Vehicle Red HOAT 50/50 prediluted coolant is aimed at owners and technicians servicing Asian-brand cars and light trucks that specify a red, silicate-free HOAT with phosphate. It’s ideal for routine maintenance or refill when replacing factory red coolant—especially for drivers who prefer a ready-to-use, long-life solution that conforms to common OEM standards. Always confirm the vehicle manufacturer’s coolant requirement before installing any antifreeze to avoid compatibility issues.