Parts for your 2020 Subaru Impreza-Coolant

2020 Subaru Impreza Coolant — What It Does and How to Look After It

Coolant absolutely is relevant to the 2020 Subaru Impreza. According to the Subaru Owner’s Manual for MY2020 Impreza and the Subaru Service Manual for the FB20 engine, this model runs a pressurised liquid cooling system that uses Subaru Super Coolant (blue), a long‑life, pre‑mixed antifreeze/coolant formulated for aluminium engines. Subaru’s published maintenance schedules (AU/NZ) specify extended coolant life and replacement timing for this vehicle.

For this Impreza, coolant’s job is straightforward: carry heat away from the engine, keep operating temps steady, prevent freezing and boil‑over, and guard the radiator, water pump, and alloy passages against corrosion. The right coolant means the FB20 runs sweet, even on hot Aussie and Kiwi summer days or crisp South Island mornings.

Subaru specifies its blue Super Coolant (phosphate OAT‑type), and it should not be mixed with green or universal brews. Sticking with the correct type keeps the long‑life additives doing their thing and avoids gunk, scale, or premature component wear.

Service intervals are generous with the factory fill: typically up to 11 years/220,000 km for the initial fill, then every 6 years/100,000 km thereafter (check the exact interval in the owner’s handbook for local spec). Even with long‑life coolant, quick checks are worth it between services.

• Check the translucent reservoir level when the engine’s cold