Parts for your 2019 Nissan Pathfinder-Coolant

2019 Nissan Pathfinder coolant — what it does and how to look after it

Coolant absolutely applies to the 2019 Nissan Pathfinder. The model’s V6 petrol engine uses a liquid cooling system specified in the 2019 Nissan Pathfinder Owner’s Manual and Service & Maintenance Guide, which call for Nissan Genuine Long Life Antifreeze/Coolant (Blue) or equivalent P-HOAT ethylene‑glycol coolant. Nissan parts literature likewise identifies “Nissan Blue” as the correct long‑life coolant for late‑model Pathfinders.

For this Pathfinder, coolant does more than stop freezing and boiling. It carries heat away from the engine, keeps operating temps stable on scorching Aussie summers and frosty Kiwi mornings, buffers against corrosion inside the alloy block and radiator, and lubricates the water pump. Using the correct P‑HOAT formula matters because its additive pack is tuned to Nissan’s alloys, gaskets and pump seals.

Servicing is straightforward. Owners should check the translucent expansion tank when the engine is cold, the level should sit between the MIN and MAX marks. If it’s low, top up with premixed Nissan Blue 50/50, or if using concentrate, mix it with demineralised water. Don’t mix different coolant chemistries or colours—if unsure what’s in there, it’s safer to fully replace. Never open the radiator cap when hot.

On replacement intervals, Nissan’s guidance for Blue long‑life coolant typically sets the first change at about 7 years/168,000 km, then every 5 years/120,000 km thereafter. Always confirm against the Owner’s Manual for local schedules. When changing, a thorough drain and refill using a vacuum fill or careful bleeding helps avoid air pockets. Run the cabin heater on HOT during bleeding, and dispose of old coolant responsibly—ethylene glycol is toxic to pets and wildlife.

Warning signs that the Pathfinder’s coolant needs attention include rising temps under load, weak cabin heat, a sweet odour, visible leaks or crusty residue around hoses, rusty or milky coolant, or frequent low levels. Address issues early to protect the head gaskets, water pump and radiator.

• Use only Nissan Genuine Blue (P‑HOAT) or an exact equivalent meeting Nissan spec.
• Inspect hoses, clamps, radiator cap and the thermostat at each service.
• If a small emergency top‑up is needed and correct coolant isn’t on hand, a little demineralised water is acceptable—then correct the mix with the right coolant soon after.

Technical references: 2019 Nissan Pathfinder Owner’s Manual (Cooling System and Maintenance sections), Nissan Service & Maintenance Guide (coolant interval), Nissan Genuine Blue Long Life Antifreeze/Coolant product specifications.

What type of coolant does a 2019 Nissan Pathfinder use?

It’s designed for Nissan Genuine Long Life Antifreeze/Coolant (Blue), a P‑HOAT ethylene‑glycol formula. Use it premixed 50/50, or mix concentrate with demineralised water to 50/50. Avoid mixing with other colours or chemistries.

How often should the coolant be changed?

For Nissan Blue, the typical schedule is first change at about 7 years/168,000 km, then every 5 years/120,000 km. Check the Owner’s Manual for the exact interval for local conditions and service history.

How do you check and top up the coolant safely?

When the engine is cold, verify the expansion tank is between MIN and MAX. Top up with the correct Nissan Blue premix if needed. Don’t remove the radiator cap while hot, if you must access it, wait until fully cool and open slowly with a cloth.