2016 Nissan Altima Coolant Capacity & Type

The 2016 Nissan Altima holds approximately 7.6 to 8.0 quarts (7.2 to 7.6 liters) of coolant, depending on the specific engine. It is crucial to use the correct coolant type and adhere to proper maintenance procedures to ensure the longevity of your Altima's cooling system.

Quick Answer

• Total Cooling System Capacity: 7.6 - 8.0 quarts (7.2 - 7.6 liters)
• OEM Coolant Spec: Nissan Long Life Antifreeze/Coolant, Blue, Phosphate-based OAT (P-OAT) or Hybrid Organic Acid Technology (HOAT).
• Mix Ratio: 50/50 prediluted or mix concentrate with distilled water.

Capacity by Engine Option

These capacities are for a complete drain and refill, which includes the radiator, engine block, and heater core. Always refer to your owner's manual for the most accurate and up-to-date information.

Flush Interval

Nissan recommends the following coolant flush intervals for the 2016 Altima:

• Normal Duty: Replace initially at 105,000 miles or 84 months, then every 75,000 miles or 60 months thereafter.
• Severe Duty: If you frequently drive in extreme conditions (towing, dusty roads, very hot or cold climates), it's advisable to inspect your coolant more frequently and consider replacing it every 60,000 miles or 48 months.

Regularly checking your coolant level and condition is essential, regardless of your driving conditions. Look for any discoloration, cloudiness, or particulate matter that might indicate contamination or degradation.

How to Refill & Bleed

Properly refilling and bleeding the cooling system is critical to prevent air pockets, which can lead to overheating. For the 2016 Nissan Altima, follow these general steps:

1. Drain the System: With the engine cool, place a drain pan under the radiator. Open the radiator drain cock (petcock) at the bottom of the radiator. Remove the radiator cap to allow the system to drain completely.
2. Close Drain and Refill: Once drained, close the drain cock. Slowly fill the coolant reservoir and radiator with the recommended 50/50 mix of Nissan-approved coolant. Fill the reservoir to the "MAX" line.
3. Bleed the System: This is a crucial step for the Altima. Start the engine with the radiator cap off (or use a special spill-free funnel kit). Set the heater to its highest temperature and fan speed. Let the engine run until it reaches operating temperature and the thermostat opens (you'll see coolant flowing in the radiator). As the engine warms up, air bubbles will escape. You may need to gently squeeze the upper and lower radiator hoses to help dislodge air pockets.
4. Important Note for Nissan Altima: Many Nissan vehicles, including the 2016 Altima, benefit greatly from a "cooling system funnel" or "spill-free funnel" kit during the bleeding process. This device creates a high point for air to escape and prevents coolant from spilling. Continue to run the engine with the funnel in place, adding coolant as needed until no more air bubbles appear.
5. Final Check: Once the engine is fully warmed and no more bubbles are visible, install the radiator cap. Let the engine cool down completely, then recheck the coolant level in the reservoir and top off if necessary.

Common Cooling System Issues

For the 2016 Nissan Altima (and the L33 generation in general), common cooling system issues can include:

• Water Pump Leaks: The water pump can be a common failure point, especially as the vehicle ages. Look for coolant leaks around the front of the engine, often indicated by a sweet smell.
• Radiator Leaks: Radiators can develop leaks over time due to corrosion, impact from road debris, or fatigue. These leaks are often visible as wet spots or crusty coolant residue on the radiator fins.
• Thermostat Failure: A failing thermostat can cause the engine to overheat (if stuck closed) or run too cool (if stuck open). Symptoms include fluctuating temperature gauges or slow engine warm-up.
• Hose Leaks: Rubber hoses can degrade, crack, or become brittle with age and heat cycles, leading to coolant leaks. Inspect hoses regularly for swelling, soft spots, or cracks.
• Coolant Reservoir Cracks: The plastic coolant overflow reservoir can sometimes develop cracks, leading to slow coolant loss.
• Head Gasket Issues (less common but possible): While not as prevalent as in some other vehicles, a blown head gasket can lead to coolant loss, engine overheating, and intermixing of oil and coolant. Signs include white smoke from the exhaust, coolant disappearance without external leaks, or milky oil.

Proper maintenance, including using the correct coolant and adhering to flush intervals, can significantly reduce the likelihood of these issues.

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