PEAK Extended Life Blue Antifreeze/Coolant Concentrate 1 Gal — POAT, Phosphate-Enhanced

This one-gallon concentrate is designed to be mixed and used in place of factory blue POAT coolants in compatible vehicles. It combines organic acid technology with phosphate additives to reduce corrosion, protect aluminum and other metals, and extend service intervals when installed after a full flush and fill. The bottle also includes a bittering agent, Denatonium Benzoate, to discourage accidental ingestion.

Which vehicles should use this blue PEAK OET antifreeze?

PEAK OET Extended Life Blue Concentrate is intended for Asian-market cars that specify a phosphate-enhanced POAT formula. It’s commonly recommended for models from Acura, Honda, Infiniti, Mitsubishi, Nissan, Subaru, and Suzuki where blue coolant is required by the manufacturer.

• Compatible with Acura and Honda systems calling for blue POAT coolant.
• Suitable for Infiniti and Nissan vehicles that require phosphate-enhanced formulations.
• Works with Mitsubishi, Subaru, and Suzuki models recommending blue long-life coolant.
• Can be mixed with other extended-life antifreeze/coolants formulated for the same chemistry.

How do I use this 1-gallon concentrate in my cooling system?

Mix the concentrate with distilled water per your vehicle manufacturer’s dilution ratio—typically 50/50 for freeze and boil-over protection. Install after performing a full system flush and fill to ensure the best corrosion protection and to meet the product’s guaranteed service life.

• Perform a complete coolant flush before adding the new concentrate.
• Use distilled water to avoid mineral deposits; follow the vehicle dilution recommendation.
• Top off or refill the radiator and reservoir, then run the engine to purge air pockets.
• Check for leaks and reconfirm coolant level after the engine reaches normal temperature.

What protection and lifetime can I expect from PEAK OET Extended Life?

This concentrated formula provides rust and corrosion protection across cooling system components and is engineered for extended service life when installed correctly. PEAK guarantees up to 150,000 miles or 5 years of protection when the product is used as part of a complete flush and fill.

• Helps prevent rust and corrosion on aluminum, iron, and other metals.
• Formulated to maintain cooling efficiency and reduce scale buildup.
• Service life guarantee: up to 150,000 miles or 5 years with proper installation.
• Includes Denatonium Benzoate to reduce ingestion risk during handling.

Can I mix this concentrate with other coolants or use it for topping off?

The concentrate is compatible with other extended life antifreeze/coolants that share the same POAT chemistry, but avoid mixing with incompatible formulas. It is suitable for topping off between full services, though a full flush and fill is recommended to achieve the guaranteed protection.

• Mixable with like-formulated extended-life POAT coolants.
• Not recommended to mix with traditional IAT (inorganic) or incompatible OAT chemistries.
• Use for topping off, but prioritize a full system flush for maximum benefit.
• Follow manufacturer guidance if unsure about coolant compatibility.

Who is this for: PEAK OET Extended Life Blue Concentrate is aimed at owners and technicians working on Asian-brand vehicles that specify a blue phosphate-enhanced POAT coolant. It’s a practical choice for DIY mechanics performing flush-and-fill maintenance, professional shops that service Honda, Nissan, Subaru and similar makes, and anyone seeking an extended-life cooling solution with a clear manufacturer usage guideline and mileage/time guarantee. If your owner’s manual calls for a blue POAT coolant, this PEAK concentrate offers a factory-compatible option when used according to instructions.