2019 Nissan Titan — Coolant Capacity & Type

The 2019 Nissan Titan holds roughly 12.0–13.5 quarts (11.4–12.8 liters) of coolant when completely drained and refilled, depending on configuration and how thoroughly it’s evacuated.

Quick answer

• Total cooling system capacity: about 12.0–13.5 qt (11.4–12.8 L)
• OEM coolant spec: Nissan Genuine Blue Long Life Antifreeze/Coolant (P-OAT, blue). Equivalent Asian P-OAT (blue) is acceptable; Nissan’s 50/50 premix is commonly sold under P/N 999MP-L25500P.
• Mix ratio: 50/50 (premix). If using concentrate, mix 50/50 with distilled water.

Capacity by engine option

For the standard (non-XD) 2019 Titan, the only engine is the 5.6L V8 (VK56VD).

• 5.6L V8 (VK56VD): approximately 12.0–13.5 qt (11.4–12.8 L)

Note: Titan XD models (a different chassis) use different components and have different capacities; see the Titan XD–specific guide.

Flush interval

• Normal service: Replace at 10 years/135,000 miles (first service), then every 5 years/75,000 miles thereafter when using Nissan Blue P-OAT coolant.
• Severe service (frequent towing, extreme temps, dusty/off‑road, lots of idling): Inspect every 15,000 miles/12 months; many shops service around 5 years/75,000 miles regardless of first-fill age if usage is severe.

Always follow the coolant condition: if pH is off, there’s contamination, or corrosion is present, service earlier.

How to refill & bleed

1. Safety first: Only open the radiator cap when the engine is stone cold. Raise front of truck slightly if possible to help air migrate to the filler neck.
2. Drain: Open the radiator drain cock (bottom of radiator) and the cap; catch old coolant. For a more complete drain, remove the lower radiator hose. Some residual coolant will remain in the block/heater core.
3. Close and prep: Close the drain. Set the cabin heat to full hot (fan can be off) to open the heater circuit.
4. Fill slowly: Use Nissan Blue 50/50 premix. Fill at the radiator cap until full. Fill the overflow reservoir to the MAX line.
5. Bleed air:
   • If equipped with an air bleed screw on the coolant outlet/upper hose housing, open it a few turns during filling until a steady stream (no bubbles) flows, then close.
   • Preferred: Vacuum-fill the system to ~25 inHg and backfill with the correct coolant to minimize air pockets.
6. Warm-up: Start engine and run at fast idle (1,500–2,000 rpm) for several minutes. Squeeze the upper radiator hose periodically to encourage trapped air to move. Watch for heater blowing hot and the cooling fans cycling.
7. Top off and cap: Shut down, let it cool completely, top off the radiator to the neck and reservoir to MAX, and install a good pressure cap. Recheck levels after the first few drive cycles.

Tips:

• The VK56VD can trap air at the upper hose/outlet—cracking the bleed (if present) or using vacuum-fill helps. Lack of cabin heat or a climbing temp gauge after service usually indicates remaining air.
• Do not mix green or universal silicated coolants; stick with Nissan Blue P‑OAT or an equivalent Asian P‑OAT (blue) such as Zerex Asian Vehicle Blue.

Common cooling system issues on this generation

• Water pump seepage: The mechanical pump can begin to weep at the shaft seal around higher mileage; look for dried pink/white residue near the pulley or a drip at the weep hole. Replace the pump and gasket as needed.
• Thermostat faults (P0128/slow warm-up): A stuck-open thermostat causes long warm-up times and poor heater output. Replace the thermostat and seal; refill/bleed carefully.
• Radiator seam leaks: Crimps between plastic tanks and the aluminum core can seep over time. Pressure-test to confirm; replacement is the fix.
• Hose and quick-connect leaks: Upper/lower radiator hoses and heater hoses can swell or oil-soak and begin to leak, especially at quick-connects. Replace hoses and clamps; avoid over-tightening on plastic necks.
• Air pockets after service: Inadequate bleeding leads to intermittent no-heat and temp swings. Use the bleed screw (if equipped) or a vacuum-fill tool.
• Coolant crossover/bypass O-ring seep: On some VK-series engines, small coolant pipes and O-rings under the intake can seep with age. Look for a sweet smell and dried coolant at the top rear of the engine valley.
• Cap or reservoir issues: A weak radiator cap can allow boil-over into the reservoir and repeated low-level warnings. Replace the cap with the correct pressure rating.

If you tow or work the truck hard, consider proactively replacing aged hoses and the cap around 100k miles and keep the radiator/condensor fins clean for best cooling performance.

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