2017 Jeep Wrangler Coolant Capacity & Type

The 2017 Jeep Wrangler's cooling system holds approximately 10.5 quarts (9.9 liters) of coolant.

Quick Answer

• Total Cooling System Capacity: Approximately 10.5 quarts (9.9 liters)
• OEM Coolant Spec: Mopar Antifreeze/Coolant 10 Year/150,000 Mile Formula (Purple/Pink/Violet, OAT - Organic Additive Technology, Mopar MS-90032)
• Mix Ratio: Typically 50/50 pre-mixed or diluted concentrate with distilled water.

Capacity by Engine Option

Flush Interval

For the 2017 Jeep Wrangler, Mopar recommends the following coolant flush intervals:

• Normal Duty: First change at 10 years or 150,000 miles, whichever comes first. After that, no regularly scheduled changes are required, but check coolant condition annually.
• Severe Duty: While not explicitly defined for coolant as strictly as for other fluids, if your vehicle experiences prolonged idling, towing heavy loads, or operates in extreme temperatures, more frequent inspections and potentially earlier flushes may be beneficial. Always refer to your owner's manual for specific severe duty guidelines.

How to Refill & Bleed

Properly refilling and bleeding the cooling system on your 2017 Jeep Wrangler is crucial to prevent air pockets, which can lead to overheating. Always perform this procedure on a cool engine.

1. Safety First: Wear appropriate personal protective equipment (gloves, eye protection).
2. Drain (if flushing): If performing a flush, drain the old coolant from the radiator drain cock and engine block drain plugs (if equipped and accessible). Flush with distilled water until clear.
3. Refill: Close all drain points. Slowly pour the specified Mopar OAT coolant (50/50 mix with distilled water if using concentrate) into the coolant reservoir up to the "FULL COLD" mark.
4. Bleed Air:
   • Start the engine with the heater set to full hot and the fan on low. Leave the radiator cap off (or reservoir cap, depending on system design).
   • Allow the engine to reach operating temperature. As the engine warms, the thermostat will open, and coolant will begin to circulate. You may see air bubbles escape from the reservoir.
   • Maintain the coolant level in the reservoir by adding more coolant as needed.
   • Some 3.6L Pentastar engines may have a bleeder screw on one of the highest hoses or thermostat housing. If present, carefully open it until a steady stream of coolant (without air bubbles) emerges, then close it.
   • Rev the engine gently a few times (to about 2,500 RPM for 30 seconds) to help dislodge air bubbles.
   • Once the engine is at operating temperature and no more bubbles are visible, install the radiator/reservoir cap.
5. Cool-Down Check: After the engine has completely cooled, recheck the coolant level in the reservoir and top off if necessary.
6. Monitor: Over the next few drive cycles, frequently check the coolant level and for any signs of leaks.

Common Cooling System Issues

The JK generation Jeep Wrangler (2007-2018), including the 2017 model, can experience a few common cooling system issues:

• Radiator Leaks: The Mopar radiator can be prone to leaks, often manifesting as cracks in the plastic end tanks. This is a common failure point.
• Water Pump Failure: The water pump can fail, leading to leaks or improper coolant circulation. Symptoms include squealing noises, coolant leaks near the water pump pulley, or engine overheating.
• Thermostat Housing Leaks: The thermostat housing, often plastic, can crack or deform, leading to coolant leaks, especially around the seal.
• Heater Core Issues: Blocked or leaking heater cores can lead to a lack of cabin heat or a sweet smell inside the vehicle. This can sometimes be exacerbated by using incorrect coolant types in the past.
• Oil Cooler Leaks (3.6L Pentastar): While not strictly a "cooling system" component, the oil cooler (mounted in the engine valley) is cooled by engine coolant. Leaks from this component are very common on the 3.6L Pentastar and can lead to external coolant loss or, in severe cases, coolant/oil mixing.

Ensure you use only the specified Mopar OAT coolant to prevent material compatibility issues and ensure proper cooling system longevity.

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