2015 Jeep Cherokee Coolant Capacity & Type Guide

The 2015 Jeep Cherokee holds between 7.1 quarts (6.7 liters) and 9.7 quarts (9.2 liters) of coolant, depending on which engine your vehicle is equipped with. Keeping your Cherokee’s cooling system properly maintained is critical for engine longevity and performance, especially given the strict coolant chemistry requirements of modern Fiat Chrysler Automobiles (FCA).

Quick answer

• Total Cooling System Capacity: 7.1 quarts (6.7 L) to 9.7 quarts (9.2 L)
• OEM Coolant Spec: Mopar 10-Year/150,000 Mile Formula OAT (Organic Additive Technology). It is purple in color and meets Chrysler Material Standard MS-12106.
• Mix Ratio: 50/50 mixture of OAT coolant concentrate and distilled water, or a pre-mixed 50/50 OAT solution.

Note: Never mix the newer purple OAT coolant (MS-12106) with the older orange HOAT coolant (MS-9769) used in pre-2013 Jeeps. Mixing these two chemistries will cause the coolant to gel and plug the radiator and heater core.

Capacity by engine option

The KL-generation Jeep Cherokee offers two primary engine options, each with a different cooling system footprint.

Capacities are approximate and include the heater core and coolant recovery reservoir. If you are doing a standard drain and fill, you will likely need slightly less than the total capacity.

Flush interval

FCA engineered the 2015 Jeep Cherokee cooling system to be relatively low maintenance, thanks to the extended-life OAT coolant.

• Normal Duty: Flush and replace the coolant every 10 years or 150,000 miles, whichever comes first.
• Severe Duty: If you frequently tow, idle for extended periods, or drive in extreme heat or dusty off-road conditions, inspect the coolant regularly. While the 10-year/150,000-mile interval still generally applies, many master technicians recommend a drain and fill closer to 100,000 miles or 7 years to ensure the anti-corrosion additives remain fully active.

How to refill & bleed

Modern Jeep cooling systems can trap air easily, leading to erratic temperatures or a lack of heat in the cabin. Follow these steps to properly refill and bleed the system:

1. Prep and Fill: With the engine cold, attach a spill-free coolant funnel securely to the radiator filler neck. Slowly pour in the 50/50 Mopar MS-12106 OAT coolant until it reaches the base of the funnel. Fill the coolant recovery reservoir to the "MAX" line.
2. Bleed Screws (if applicable): Some 2.4L engines may feature a small bleed valve near the thermostat housing. If equipped, open this slightly while filling until a steady stream of coolant escapes, then close it.
3. Burping the System: Turn the vehicle on, set the climate control to max heat, and keep the blower motor on low. Let the engine idle.
4. Monitor and Top Off: As the engine warms up and the thermostat opens, the coolant level in the funnel will drop, and large air bubbles will burp out. Keep topping off the funnel so it never runs dry.
5. Final Check: Once the cooling fans cycle on and you have hot air blowing from the cabin vents, the system is fully bled. Turn off the engine, remove the funnel, install the radiator cap, and verify the reservoir level.

Pro-tip: Using a pneumatic vacuum coolant refilling tool is highly recommended for the 3.2L Pentastar V6, as it eliminates air pockets instantly during the fill process.

Common cooling system issues

As a technician, I frequently see a few specific cooling system quirks on the 2015 Jeep Cherokee:

• Thermostat Housing Leaks (3.2L V6): The plastic thermostat housing on the Pentastar engine is prone to cracking and leaking over time. If you smell sweet coolant but don't see drips on the ground, check the engine valley area under the intake manifold for pooling coolant.
• Radiator Seam Failures: The crimped seams where the plastic end tanks meet the aluminum radiator core can develop slow weeps, particularly as the vehicle approaches the 100,000-mile mark.
• Contaminated Coolant: Quick-lube shops often mistakenly top off the Cherokee's purple OAT coolant with universal green or orange HOAT coolant. This creates a sludgy buildup that requires an extensive, multiple-pass flush to correct.

Keeping an eye on your reservoir level and only using the strict MS-12106 specification will save you from most major headaches. If you aren't comfortable tackling a coolant flush yourself or suspect a leak, leave it to a professional.

Find a trusted shop on Repairius.