2019 Subaru Forester Coolant Capacity & Type
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A 2019 Subaru Forester holds between 8.0 and 8.4 quarts (7.6-7.9L) of coolant.
Quick Answer
- Total Cooling System Capacity: 8.0 to 8.4 quarts (7.6 to 7.9L)
- OEM Coolant Spec: Subaru Super Coolant (Blue, P-OAT) SOA868V9270
- Mix Ratio: 50/50 Pre-mixed
Capacity by Engine Option
The 2019 Subaru Forester was offered with one engine, the 2.5L FB25, but with two slightly different cooling system capacities depending on the transmission.
| Engine | Transmission | Capacity (quarts) | Capacity (liters) |
|---|---|---|---|
| 2.5L H4 | CVT | 8.0 | 7.6 |
| 2.5L H4 | CVT w/ oil cooler | 8.4 | 7.9 |
Flush Interval
Subaru recommends an initial replacement interval of 11 years/137,500 miles. After the initial service, the coolant should be replaced every 6 years/75,000 miles.
- Normal Duty: 11 years or 137,500 miles, then every 6 years/75,000 miles.
- Severe Duty: Consider more frequent changes if the vehicle is used for towing, high-performance driving, or in extreme temperatures.
How to Refill & Bleed
Refilling a modern cooling system requires care to avoid air pockets, which can cause overheating.
- Use the right coolant: Always use Subaru Super Coolant or a compatible P-OAT (Phosphated Organic Acid Technology) coolant.
- Mix properly: Use a 50/50 pre-mix or create your own with distilled water.
- Raise the front: Safely raise the front of the vehicle to help air travel to the highest point.
- Use a spill-proof funnel: This is highly recommended for modern Subarus. It allows you to overfill the system slightly and work air out of the system as it warms up.
- Bleed the air: With the funnel in place and partially filled, start the engine with the heat on high. Let the engine run until the cooling fans cycle on and off a few times. You will see bubbles coming up into the funnel, which is the air escaping the system.
- Top off: Once the bubbling stops, the system is bled. Let the vehicle cool, remove the funnel, and ensure the coolant reservoir is filled to the "Full" mark.
Common Cooling System Issues
The 2019 Subaru Forester is part of a generation (2019-present) that has proven to be very reliable. Unlike older Subaru models, widespread head gasket issues are not a common concern with the FB25 engine. However, as with any vehicle, cooling system components can wear out over time. Watch for:
- Leaking Radiators: Plastic end tanks can crack with age and thermal cycles.
- Water Pump Failure: While generally durable, the water pump is a wear item and will eventually need replacement. It is often replaced at the same time as the serpentine belt.
- Thermostat Issues: A thermostat stuck open will cause the engine to warm up slowly, while a thermostat stuck closed will cause rapid overheating.
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More specs for the 2019 Subaru Forester
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
2019 Subaru Forester 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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