2019 Subaru Crosstrek: Coolant Capacity & Type

Quick answer

The 2019 Subaru Crosstrek has a total cooling system capacity of 8.0 to 8.2 quarts (7.6 to 7.8 liters). It requires Subaru Super Coolant, a blue, Phosphated Hybrid Organic Acid Technology (P-HOAT) coolant. This coolant is pre-mixed 50/50 and should not be diluted further.

• Total Cooling System Capacity: 8.0 - 8.2 quarts (7.6 - 7.8 liters)
• OEM Coolant Spec: Subaru Super Coolant (SOA868V9270), blue, P-HOAT
• Mix Ratio: 50/50 pre-mix

Capacity by engine option

Flush interval

The initial coolant flush for a 2019 Subaru Crosstrek is recommended at 11 years or 137,500 miles (220,000 km), whichever comes first. Subsequent flushes are recommended every 6 years or 75,000 miles (120,000 km).

• Normal Duty: 11 years / 137,500 miles (then every 6 years / 75,000 miles)
• Severe Duty: Consider more frequent changes, especially if you live in an extreme climate or frequently tow.

How to refill & bleed

Refilling and bleeding the cooling system on a 2019 Subaru Crosstrek is a straightforward process, but it's crucial to avoid air pockets, which can cause overheating. While a vacuum-fill tool is recommended for a professional and bubble-free refill, you can do it at home with a bit of patience.

1. Elevate the front: Safely raise the front of the vehicle to help air travel to the radiator cap.
2. Use a spill-free funnel: A spill-free funnel kit will help you add coolant without making a mess and allows you to monitor the bleeding process.
3. Slowly fill: Add the pre-mixed Subaru Super Coolant to the funnel. You'll see bubbles coming up as the system fills and air escapes.
4. Start the engine: With the funnel still in place, start the engine and let it warm up. You'll see more bubbles as the thermostat opens and coolant circulates.
5. Heater on high: Turn the heater on to the highest temperature and the fan to the lowest setting. This ensures the heater core is circulating coolant.
6. Squeeze hoses: Carefully squeeze the upper and lower radiator hoses to help dislodge any trapped air bubbles.
7. Continue until bubbling stops: Once the engine is at operating temperature and you no longer see bubbles coming into the funnel, the system is bled. Let the vehicle cool down completely before removing the funnel and replacing the radiator cap.

Common cooling system issues

The 2019 Subaru Crosstrek is generally reliable, but like any vehicle, it can experience cooling system issues. Some to watch for include:

• Radiator leaks: Look for any signs of blue coolant stains on the radiator or under the vehicle. The seams where the plastic end tanks meet the aluminum core are a common leak point.
• Thermostat failure: A stuck thermostat can cause the engine to either overheat or fail to reach operating temperature.
• Water pump issues: While not as common on newer models, a failing water pump can lead to overheating. Listen for any unusual noises from the front of the engine.
• Head gasket concerns: While Subaru has made significant improvements to their head gasket design, it's still something to be aware of, especially on high-mileage vehicles. Watch for any signs of oil in the coolant or coolant in the oil.

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