Parts for your 2017 Subaru Exiga-Coolant

2017 Subaru Exiga coolant — what it does, when to replace it, and how to look after it

Coolant is absolutely relevant and used on the 2017 Subaru Exiga. Subaru’s own technical literature confirms this: the FB-series engine in the Exiga relies on an ethylene-glycol, long‑life “Subaru Super Coolant” (blue). This is supported by Subaru Owner’s Manuals for the Exiga/Crossover 7, the FB25 Subaru Workshop Manual (Cooling System), and Subaru’s Super Coolant service information.

In a nutshell, coolant keeps the Exiga’s engine at the right temperature, protects against corrosion inside the alloy block and radiator, and raises the boiling point so it doesn’t overheat slogging up a hill in summer. It also guards the water pump, heater core, and thermostat from scale and cavitation. For NZ and Aussie conditions, the recommended pre‑mix is typically 50/50 coolant and demineralised water (use genuine pre‑mix if possible), which balances freeze protection with corrosion and boilover resistance.

Modern Subarus running the blue Super Coolant have extended service intervals. As a guide from Subaru sources, the first change is typically around 10–11 years or roughly 200,000–220,000 km, then every 6 years or about 100,000–120,000 km thereafter. Because service schedules can vary by market and engine code, it’s smart to confirm the exact interval in the owner’s manual or with a Subaru technician—especially if the vehicle is a used import.

• Top ups: Use Subaru Super Coolant (blue) only. Don’t mix green or “universal” types—mixing can shorten life and reduce corrosion protection.
• Level checks: Inspect the expansion tank when the engine is cold, the level should sit between the MIN and MAX marks.
• Quality checks: If history’s unknown, have the coolant tested (pH and freeze/boil protection) or consider a proactive replacement.
• Bleeding: After a change, run the engine with the heater on HOT and bleed air properly to avoid hot spots and erratic temps.
• Safety: Never open the radiator cap when hot. Dispose of old coolant responsibly—it's toxic to pets and waterways.

Watch for signs the system needs attention: sweet smells, low level without visible leaks, rusty or milky coolant, temperature gauge creeping up, or the heater going cold under load. While servicing, it’s worth inspecting hoses, clamps, the radiator cap, and the water pump area for seepage. Sticking with the right blue coolant and the proper interval keeps the Exiga’s FB engine happy for the long haul.

Popular questions

What coolant type does a 2017 Subaru Exiga use?
It’s designed for Subaru Super Coolant (blue), an ethylene‑glycol, long‑life formula with phosphate‑based inhibitors. Use genuine pre‑mix or the correct concentrate with demineralised water. Avoid mixing different colours or “universal” blends.

How often should the 2017 Exiga’s coolant be changed?
Subaru’s long‑life blue coolant typically runs about 10–11 years/200,000–220,000 km for the first fill, then every 6 years/100,000–120,000 km. Always confirm the exact schedule in the owner’s manual for the specific market and engine.

Can tap water be used to top up?
Best practice is genuine pre‑mix or demineralised water with the correct concentrate. A small emergency top‑up with clean tap water won’t kill it, but repeated use can add minerals that scale the system. Correct it with the proper mix as soon as possible.