Parts for your 2022 Subaru Impreza-Coolant

2022 Subaru Impreza coolant – what it does and how to look after it

Coolant is absolutely relevant to the 2022 Subaru Impreza. The model’s 2.0‑litre FB-series petrol engine is liquid‑cooled and relies on engine coolant to manage heat. Technical sources including the 2022 Subaru Impreza Owner’s Manual (Cooling System and Specifications sections) and Subaru service information note the use of Subaru Super Coolant (the blue, long‑life P‑OAT formula) for this vehicle.

In this Impreza, coolant does a lot more than keep things from freezing. It carries heat away from the aluminium engine, prevents overheating on hot Aussie and Kiwi days, resists boiling under load, protects against internal corrosion, and lubricates the water pump. It also feeds the heater core, so a healthy cooling system means reliable cabin heat and clear demisters in winter. Subaru’s blue Super Coolant is a long‑life, pre‑mixed formulation designed to be compatible with the Impreza’s alloys, gaskets and seals, which is why the brand specifies it in the handbook and service literature.

For servicing, owners should stick with the Subaru‑specified coolant and interval. With the blue long‑life fill, Subaru typically calls for a very extended first replacement period (around 10–11 years or 200,000–220,000 km), followed by changes roughly every 5–6 years or 100,000–110,000 km. The exact numbers vary by market and model year, so it’s best to confirm in the glovebox manual or dealer schedule. Topping up should be done only with the same Subaru Super Coolant, mixing different colours or chemistries can dilute corrosion protection and shorten service life.

Simple checks between services help the Impreza stay happy:

• Check the translucent expansion tank when the engine is cold and keep the level between the marks.
• Look for staining, sweet smells, or damp areas around hoses, the radiator and the water pump.
• If a top‑up is ever needed, use the correct blue Subaru Super Coolant. In an emergency only, use demineralised water and restore the proper mix as soon as possible.
• After any drain/refill, the system should be bled correctly (heater on hot, air purged) to avoid air pockets.

Because coolant is toxic, any old fluid should be captured and recycled responsibly. Subaru’s own guidance—via the Owner’s Manual and service bulletins on Subaru Super Coolant—backs using the genuine long‑life fluid and following the factory interval for the 2022 Impreza.

Popular questions about 2022 Subaru Impreza coolant

What coolant does a 2022 Subaru Impreza use?
The 2022 Impreza is specified for Subaru Super Coolant, the blue, long‑life pre‑mixed coolant. It’s a phosphate organic acid technology (P‑OAT) formula designed for Subaru alloys and seals. Using the genuine blue coolant avoids compatibility issues and keeps the long service interval intact.

How often should the coolant be changed?
With Subaru’s blue long‑life fill, the first change is typically around 10–11 years or 200,000–220,000 km, then roughly every 5–6 years or 100,000–110,000 km. Always confirm the exact interval in the 2022 Impreza Owner’s Manual for your market or ask a Subaru dealer.

Can water be used to top up the coolant?
Only in an emergency, and use demineralised water. Coolant concentration and inhibitors will be diluted, so the system should be corrected with the proper Subaru Super Coolant as soon as possible. Avoid tap water because minerals can cause scale and corrosion.