2022 Jeep Wrangler Coolant Capacity & Type
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The 2022 Jeep Wrangler total cooling system capacity is between 7.4 and 10.5 quarts (7.0-10.0 L) depending on the engine option.
Quick Answer
- Total Cooling System Capacity: 7.4 to 10.5 quarts (7.0–10.0 L)
- OEM Coolant Spec: Mopar OAT (Organic Additive Technology) meeting MS-12106, purple in color.
- Mix Ratio: 50/50 mix of coolant concentrate and distilled water. Pre-mixed solutions are recommended.
Capacity by Engine Option
| Engine | Capacity (Quarts) | Capacity (Liters) |
|---|---|---|
| 2.0L Turbo I-4 | 7.4 qt | 7.0 L |
| 3.0L EcoDiesel V6 | 10.5 qt | 10.0 L |
| 3.6L Pentastar V6 | 9.5 qt | 9.0 L |
Flush Interval
- Normal Duty: Mopar recommends a coolant flush every 10 years or 150,000 miles, whichever comes first.
- Severe Duty: If the vehicle is used for towing, heavy loading, or extensive idling, it is recommended to shorten this interval to 5 years or 75,000 miles.
How to Refill & Bleed
Refilling the cooling system on a 2022 Jeep Wrangler requires careful bleeding to remove all air pockets, which can cause overheating. While a vacuum-fill tool is the professional's choice for a guaranteed air-free fill, you can perform the procedure without one.
- Mix Coolant: Ensure you are using a 50/50 mix of Mopar OAT MS-12106 coolant and distilled water.
- Slow Fill: With the engine off and cool, slowly add the coolant mixture to the coolant reservoir until it reaches the "MAX" line.
- Bleed Air: Locate the bleeder screw on the thermostat housing. Loosen it slightly until a steady stream of coolant emerges, then tighten it.
- Run Engine: Start the engine with the heater on its highest setting and the fan on low. Let it run for 15-20 minutes to allow the thermostat to open and circulate the coolant.
- Top Off: As the engine cools, recheck the coolant level in the reservoir and top off as necessary.
Common Cooling System Issues
The Jeep Wrangler JL generation is known for being robust, but some common issues can arise:
- Radiator Leaks: Damage from off-roading can cause leaks in the radiator fins or end tanks.
- Water Pump Failures: Premature water pump failure is a known issue on some Pentastar V6 engines. Watch for coolant drips from the front of the engine.
- Thermostat Issues: A stuck thermostat can cause the engine to overheat or fail to reach operating temperature.
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More specs for the 2022 Jeep Wrangler
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2022 Jeep Wrangler Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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Values can vary by engine, trim and build date; check your VIN-specific service information. Updated 2026-08-27.