NISSAN Genuine Blue Long-Life Antifreeze/Coolant 2 Gal 50/50 Premix — OEM Corrosion Protection for Aluminum & Cast Iron

Nissan Genuine Fluid 999MP-L25500P is a factory-formulated blue long-life 50/50 premix antifreeze/coolant engineered to protect engine metals and maintain optimal cooling performance.

This ready-to-use coolant matches the same blue, long-life formulation specified for many Nissan vehicles, so you don’t need to dilute it before topping off or performing a drain-and-fill. It’s designed to provide corrosion protection for aluminum, cast iron, and other engine cooling system components while helping maintain stable temperatures and freeze/boil protection over extended service intervals. Follow your vehicle owner’s manual for proper service steps and safety precautions.

What makes this Nissan coolant different from generic antifreeze?

This product is manufactured to Nissan’s specification for color, corrosion inhibitors, and long-life performance, ensuring compatibility with factory materials and seals. Using the OEM formula reduces the chance of mixing incompatible chemistries that can shorten component life.

• Factory-formulated to match Nissan original fill chemistry and blue color
• Contains corrosion inhibitors tailored for aluminum and cast-iron parts
• Sold as a 50/50 premix—no water required for proper freeze/boil protection
• Reduces risk of chemical incompatibility across the cooling system

How should I use this 2-gallon premix when servicing my cooling system?

Because the product is a 50/50 premix, it can be added directly to the radiator or coolant reservoir without dilution. Replace the total system volume per your service manual or perform a drain-and-fill approximately every 50,000 miles or according to Nissan’s maintenance schedule.

• Use straight from the container—no mixing with water needed
• Top off the system to the specified fill level in the owner’s manual
• Perform a full coolant change per Nissan mileage intervals or technician guidance
• Observe proper disposal of old coolant at an approved facility

Will this coolant protect modern engine materials and seals?

The long-life inhibitor package is selected to protect aluminum heads, cast-iron blocks, water pumps, radiators, and cooling system seals common in Nissan engines. It also includes a bittering agent to discourage accidental ingestion, but keep it stored away from children and pets.

• Formulated for aluminum and cast-iron corrosion protection
• Compatible with factory hoses, gaskets, and seals when used as directed
• Includes a bittering agent for safety; still handle with care
• Not a substitute for following model-specific service procedures

Who is this for? This Nissan Genuine 2-gallon premix coolant is ideal for Nissan owners, independent mechanics, and fleet managers who prefer OEM fluids to maintain warranty alignment and system compatibility. It’s especially useful when topping off multiple vehicles or completing a full coolant drain-and-fill, because the 2-gallon size supplies enough premixed fluid for a single large system or multiple top-ups. Always consult the vehicle’s service manual for specific instructions, mixture requirements (if any), and safe handling procedures before performing service.