PEAK Purple OAT Antifreeze/Coolant Concentrate 1 Gal — Extended-Life Corrosion Protection (15-Year)

PEAK OET Purple Concentrate Antifreeze/Coolant is a 1-gallon, ethylene-glycol-based extended-life coolant engineered with organic acid technology to protect modern North American engines that require a purple OAT formula.

This concentrated antifreeze/coolant blends advanced organic acid corrosion inhibitors intended to match the protection used in many factory fills for newer Alfa Romeo, Chrysler, Dodge, Fiat, Jeep, and RAM models. Supplied as a concentrate, it’s designed for complete flush-and-fill service, topping off, or maintenance on cooling systems specified to use a purple OAT coolant. When installed according to directions and as part of a full system service, PEAK guarantees up to 15 years or 350,000 miles of service life protection.

How does PEAK OET Purple Concentrate protect modern engines?

The formula combines ethylene glycol with a balanced package of organic acid corrosion inhibitors that shield aluminum, cast iron, solder, and other common materials found in engine cooling systems. It helps reduce scale and corrosion that can degrade heat transfer and shorten component life.

• OAT chemistry tailored for newer North American vehicle substrates
• Corrosion inhibitors that mimic factory protection
• Helps preserve water pump, radiator, and heater core integrity

What service life and warranty should I expect after installation?

When the product is used as a concentrate in a complete flush-and-fill procedure, PEAK offers a service-life guarantee of up to 15 years or 350,000 miles (or 5 years, depending on the specific warranty terms). This applies when installation follows manufacturer and product instructions and is part of a full system replacement of old coolant.

• Guaranteed protection up to 15 years/350,000 miles under qualifying conditions
• Requires proper flush-and-fill and correct dilution per instructions
• Warranty applies to qualifying North American vehicle applications

How should I use this concentrate in my vehicle?

This is a concentrate formula that must be diluted with the correct ratio of water (typically distilled) before filling the cooling system. Use it for complete system refills after flushing, or for topping off systems that specifically require a purple OAT coolant; always follow your vehicle manufacturer’s coolant specifications and mixing recommendations.

• Mix concentrate with water to the manufacturer-recommended ratio
• Use distilled or deionized water to avoid mineral deposits
• Only use in vehicles specifying purple OAT coolant chemistry

Will this coolant work with my car’s existing antifreeze?

Compatibility depends on the existing coolant chemistry. PEAK OET Purple is an OAT (organic acid technology) concentrate formulated for modern North American vehicles; mixing with incompatible chemistries can reduce protection or cause deposit formation. When in doubt, perform a full system flush before refilling with this product.

• Avoid mixing with traditional inorganic or hybrid formulations unless manufacturer allows it
• Flush system if previous coolant chemistry is unknown
• Check your owner’s manual for purple OAT specification

Who is this for: PEAK OET Purple Concentrate is intended for owners, technicians, and fleet managers of modern North American vehicles—especially Alfa Romeo, Chrysler, Dodge, Fiat, Jeep, and RAM models—that call for a purple OAT coolant. It’s suited to shop technicians and DIYers comfortable performing a complete flush-and-fill and following dilution instructions, and for anyone looking for a long-life coolant option that aligns with factory corrosion inhibitor technology.