2022 Honda Pilot Coolant Capacity & Type

The 2022 Honda Pilot's cooling system holds approximately 8.2 US quarts (7.8 liters) of coolant. Here's what you need to know about keeping your Pilot running cool.

Quick Answer

• Total Cooling System Capacity: Approximately 8.2 US quarts (7.8 liters)
• OEM Coolant Specification: Honda Long-Life Antifreeze/Coolant Type 2 (Blue, P-OAT Hybrid Coolant)
• Mix Ratio: 50/50 pre-mixed coolant recommended

Capacity by Engine Option

The 2022 Honda Pilot is available with a single engine option, the 3.5L V6 (J35Y6).

This capacity includes the radiator, engine block, heater core, and all associated hoses.

Flush Interval

Honda recommends the first coolant replacement at 10 years or 120,000 miles, whichever comes first, for normal driving conditions. After the initial replacement, subsequent replacements are recommended every 5 years or 60,000 miles.

For severe duty conditions (e.g., frequent towing, extreme temperatures, dusty conditions), it's advisable to consider shortening this interval. Refer to your owner's manual for specific severe duty recommendations.

How to Refill & Bleed

Refilling and bleeding the cooling system on your 2022 Honda Pilot is crucial to prevent air pockets, which can cause overheating. Here's a general procedure:

1. Cool Down: Ensure the engine is completely cool before starting.
2. Drain: With the engine cool, open the radiator drain plug (usually on the bottom of the radiator) and the engine drain plug (if applicable and accessible) to thoroughly drain the old coolant. Always refer to your service manual for exact locations.
3. Flush (Optional but Recommended): Close the drain plugs and fill the system with distilled water. Run the engine with the heater on high until it reaches operating temperature. Drain the distilled water. Repeat this process until the drained water is clear. This removes residual old coolant and contaminants.
4. Refill: Close all drain plugs. Fill the radiator slowly with the Honda Long-Life Antifreeze/Coolant Type 2 (50/50 mix). Fill the reservoir to the MAX line.
5. Bleed Air:
   • Leave the radiator cap off (or loosely fitted) and start the engine.
   • Turn the heater to its highest setting and fan speed.
   • Let the engine run, periodically squeezing the upper and lower radiator hoses to help dislodge air bubbles.
   • Watch the coolant level in the radiator and top off as necessary. You may see air bubbles escape.
   • Rev the engine gently (around 2,000-2,500 RPM) for a few minutes at a time to help circulate coolant and release air.
   • Some Honda vehicles have an air bleeder valve, often located near the thermostat housing or on a hose leading to the heater core. If present, open this valve until a steady stream of coolant (without air bubbles) emerges, then close it.
   • Continue this process until no more air bubbles are visible and the coolant level stabilizes. This can take 15-30 minutes or more.
6. Final Check: Install the radiator cap. Drive the vehicle and monitor the temperature gauge. After the engine cools down, recheck the coolant level in the reservoir and top off if needed.

Common Cooling System Issues for This Generation (2016-2022 Honda Pilot)

While the 2022 Honda Pilot is generally reliable, some common cooling system considerations for this generation may include:

• Water Pump Leaks: Although not extremely prevalent, water pump leaks can occur, typically manifesting as a coolant drip in the front of the engine.
• Radiator Leaks: Over time, plastic end tanks on the radiator can become brittle and crack, leading to coolant leaks. Road debris can also damage the radiator core.
• Thermostat Issues: A faulty thermostat can cause the engine to overheat (stuck closed) or run too cool (stuck open).
• Hose Leaks: Coolant hoses can degrade and crack over time, leading to leaks. Inspect hoses for swelling, cracking, or hardness.
• Coolant Reservoir Leaks or Cracks: The plastic coolant reservoir can develop cracks, especially around the inlet/outlet necks, leading to mysterious coolant loss.

Regular inspection of your cooling system components and adherence to the recommended coolant maintenance schedule will help prevent these issues and ensure the longevity of your Honda Pilot.

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