2024 Subaru Crosstrek: Coolant Capacity & Type

The 2024 Subaru Crosstrek holds between 7.9 and 8.2 quarts (7.5–7.8 liters) of coolant.

Quick Answer

• Total Cooling System Capacity: 7.9–8.2 quarts (7.5–7.8 liters)
• OEM Coolant Specification: Subaru Super Coolant (Blue, P-OAT)
• Mix Ratio: 50/50 (pre-mixed)

Capacity by Engine Option

Flush Interval

The factory fill of Subaru Super Coolant is designed for long life.

• Normal Service: The first replacement is recommended at 11 years or 137,500 miles.
• Severe Duty: After the initial service, subsequent changes should be performed every 6 years or 75,000 miles. Severe service conditions include frequent short trips in freezing temperatures, towing, or extensive idling.

How to Refill & Bleed

The cooling system on the 2024 Crosstrek is designed to be self-bleeding, but care must be taken to ensure all air is removed to prevent overheating.

1. Ensure the engine is cool. Never open a hot cooling system.
2. Remove the radiator cap and the cap on the coolant overflow reservoir.
3. Slowly add Subaru Super Coolant to the radiator until it is full.
4. Add coolant to the overflow reservoir until it reaches the "FULL" mark.
5. Start the engine with the radiator cap off. You should see coolant circulating and air bubbles coming to the surface.
6. As the engine warms up and the thermostat opens, the coolant level will drop. Continue to add coolant to the radiator to keep it full.
7. Squeeze the upper and lower radiator hoses to help purge any trapped air.
8. Once the engine reaches operating temperature and the radiator fans have cycled on and off at least once, top off the radiator one last time and replace the cap securely.
9. Top off the overflow reservoir if needed and replace the cap. Check the level again after the vehicle has cooled completely.

Common Cooling System Issues

The third-generation Crosstrek is relatively new, so widespread, long-term issues have not yet been identified. However, based on previous generations and similar Subaru platforms, potential issues to watch for as the vehicle ages include:

• Thermostat Failure: A thermostat stuck open will cause a check engine light and a lack of heat from the vents. A thermostat stuck closed can lead to rapid overheating.
• Radiator Leaks: Leaks can develop in the plastic end tanks or where the aluminum core meets the end tanks.
• Water Pump Failure: While Subaru water pumps are generally durable, they can eventually fail, leading to leaks or overheating.

Keeping the correct type and level of coolant in your Crosstrek is the best way to ensure a long service life from your cooling system components. Find a trusted shop on Repairius.