2019 Nissan Frontier Coolant Capacity & Type

The 2019 Nissan Frontier cooling system typically holds between 9.0 to 10.0 quarts (8.5 to 9.5 liters) of coolant, depending on the engine and configuration.

Quick Answer

• Total Cooling System Capacity: 9.0 - 10.0 quarts (8.5 - 9.5 liters)
• OEM Coolant Spec: Nissan Genuine Long Life Antifreeze/Coolant, Blue, Phosphate Hybrid Organic Acid Technology (P-HOAT), Nissan L250 (or equivalent).
• Mix Ratio: 50/50 pre-mix or 50% concentrate with 50% distilled water.

Capacity by Engine Option

The 2019 Nissan Frontier was offered with two engine options, and their cooling system capacities are slightly different:

• 2.5L I4 Engine: Approximately 9.0 quarts (8.5 liters)
• 4.0L V6 Engine: Approximately 10.0 quarts (9.5 liters)

Always consult your owner's manual for the most precise capacity figures for your specific vehicle configuration.

Flush Interval

Maintaining the correct coolant and ensuring it's fresh is crucial for the longevity of your cooling system components.

• Normal Duty: Replace every 60,000 miles or 48 months, whichever comes first.
• Severe Duty: Consider replacing every 30,000 miles or 24 months, especially if you regularly tow, drive in extreme temperatures, or operate in dusty conditions.

Refer to your Nissan Frontier's owner's manual for the factory-recommended maintenance schedule.

How to Refill & Bleed

Properly refilling and bleeding the cooling system is vital to prevent air pockets, which can lead to overheating. Here's a general procedure:

1. Safety First: Ensure the engine is completely cool before starting.
2. Drain Old Coolant: With the engine off and cool, open the radiator drain cock (petcock) located at the bottom of the radiator. Remove the radiator cap to speed up draining. Catch the old coolant in a suitable container for proper disposal.
3. Flush (Optional but Recommended): If desired, flush the system with distilled water until clear water flows out. You can use a dedicated coolant flush product as directed.
4. Close Drain: Once drained, close the radiator drain cock securely.
5. Refill: Begin filling the radiator with the specified Nissan genuine blue P-HOAT 50/50 coolant mix. Fill slowly to allow air to escape.
6. Fill Reservoir: Fill the coolant reservoir (expansion tank) to the "MAX" or "FULL" line.
7. Bleed Air:
   • Start the engine and let it run with the heater on full blast (hot). This will open the heater core valve and help circulate coolant.
   • As the engine warms up, coolant levels in the radiator and reservoir may drop. Continuously top off the radiator until it remains full.
   • Many Nissan Frontier models have a small air bleed screw near the thermostat housing or on the upper radiator hose. Open this screw slightly until a steady stream of coolant (without air bubbles) emerges, then close it.
   • Squeeze the upper and lower radiator hoses several times to help dislodge air bubbles.
   • Continue running the engine until the thermostat opens (you