For most 2017 Wranglers equipped with the 3.6-liter Pentastar V6, the cooling system holds about 11.2–11.5 quarts of coolant (roughly 10.6–11.0 liters). If your model uses the smaller 2.4-liter Tigershark engine, the capacity is about 9.0–9.6 quarts (8.5–9.1 liters).
The 2017 Wrangler offered two main engine options, and coolant capacity varies with engine and configuration. This article breaks down typical capacities, how to figure the correct fill for your specific Jeep, and best practices for maintenance and safe refilling.
Engine options and coolant capacity
Before listing the numbers, note that capacities differ by engine. The following ranges reflect typical total cooling system capacity for each engine in the 2017 Wrangler lineup:
- 3.6L Pentastar V6: about 11.2–11.5 quarts (10.6–11.0 L) total cooling system capacity
- 2.4L Tigershark I4: about 9.0–9.6 quarts (8.5–9.1 L) total cooling system capacity
Keep in mind that these figures refer to the entire cooling system (radiator, engine block, heater circuit, and hoses). If you drain only part of the system, your refill volume may be lower.
Choosing the right antifreeze and mixing ratio
Use a HOAT (Hybrid Organic Acid Technology) coolant recommended by Jeep, typically Mopar Antifreeze/Coolant. You can buy it pre-diluted for a 50/50 mix or as concentrate. If you buy concentrate, mix it with distilled water to achieve the 50/50 ratio. Do not use non-HOAT formulas or plain water alone in place of the proper coolant.
Always follow the label instructions and confirm compatibility with aluminum components and your climate. If you’re unsure, consult a dealership or certified mechanic.
Maintenance and refilling procedure
When performing a drain, flush, and refill, follow these general steps to ensure a safe and effective process. If you’re not comfortable with automotive maintenance, seek professional help.
- Ensure the engine is completely cool before opening the radiator cap. Open slowly to relieve pressure.
- Place a drain pan under the radiator and drain the old coolant from the drain valve or radiator cap area; also consider draining the engine block if accessible.
- Optionally flush the cooling system with distilled water to remove debris; drain again.
- Fill with a 50/50 mix of HOAT coolant and distilled water, starting with the radiator and then the reservoir. Check the level when cold and top off as needed.
- Start the engine, turn the heater to the hot setting, and run to operating temperature to purge air from the system. Recheck levels and add coolant if necessary.
Some Wranglers may require a specific bleed procedure to remove air from the heater core. If you encounter lingering air pockets or overheating symptoms, consult the owner's manual or a service professional.
Summary
The 2017 Jeep Wrangler’s antifreeze capacity varies by engine: about 11.2–11.5 quarts (10.6–11.0 L) for the 3.6L V6, and about 9.0–9.6 quarts (8.5–9.1 L) for the 2.4L engine. Use a Mopar HOAT antifreeze and mix to 50/50 with distilled water unless you’re using pre-diluted coolant. For maintenance, follow proper safety precautions and consult the owner’s manual or a qualified mechanic to confirm exact specifications for your vehicle.