Parts for your 2013 Subaru Xv-Coolant

2013 Subaru XV coolant — what it does, and how to look after it

Coolant absolutely is relevant and used on the 2013 Subaru XV. The FB20 2.0‑litre boxer engine is liquid‑cooled from factory. Technical references including the 2013 Subaru XV Owner’s Manual (Cooling System section), the Subaru FB engine workshop manual, and Subaru’s Genuine “Super Coolant” literature (blue, long‑life) all specify a dedicated engine coolant circuit with a thermostat, radiator, heater core and overflow bottle.

In this XV, coolant does more than stop the engine boiling on a hot Aussie or Kiwi summer arvo. It carries heat away from the cylinders, protects against freezing and boiling, and includes corrosion inhibitors to keep the alloy block, radiator and water pump in good nick. It also feeds the cabin heater and interfaces with the CVT’s warmer—so the right coolant helps drivability and component life.

Subaru factory‑fills the XV with blue long‑life Super Coolant (pre‑mixed). The brand‑approved chemistry is designed for extended service life, but it still degrades over time and kilometres. As per Subaru service literature for the era, expect an extended initial replacement interval, then periodic changes thereafter—always confirm against the vehicle’s service book for Australia/New Zealand, as intervals can vary by market and build date.

When servicing a 2013 Subaru XV, good coolant practice includes:

• Using Subaru Super Coolant (blue) or an equivalent that meets Subaru’s spec, avoid mixing green conventional types with the blue long‑life formula.
• Checking level cold at the overflow bottle and the filler tank under the bonnet, top up with the correct pre‑mix only. If emergency top‑up is needed, use distilled/deionised water and correct with proper coolant ASAP.
• Inspecting hoses, clamps, radiator end tanks and the water pump weep hole for stains or crusty deposits.
• Replacing the radiator cap if the seal looks tired—cap pressure matters for boiling protection.
• Bleeding air properly after a drain-and-fill. On the FB engine, run the heater full hot, elevate the filler point with a funnel, and burp the system until bubbles stop.

Signs it’s time to book it in: rusty or milky coolant colour, sweet smell after shutdown, rising temps in traffic, or the low level creeping down with no obvious leak. Fresh, correct coolant helps keep head gaskets happy and the XV running cool on long Kiwi hill climbs or a hot run up the Hume.

Popular questions about 2013 Subaru XV coolant

What coolant type should a 2013 Subaru XV use?
Subaru specifies its blue long‑life Super Coolant (pre‑mixed). If using an aftermarket option, choose a high‑quality, phosphate‑enhanced OAT/PHOAT that states Subaru compatibility. Mixing types isn’t recommended—stick with one chemistry and colour.

How often should the coolant be changed?
The blue factory fill has an extended life per Subaru guidance for this generation, then shorter intervals for subsequent changes. Because Australia/NZ schedules can differ, follow the XV’s service booklet or dealer guidance for your VIN. If the coolant looks discoloured or testing shows weak protection, change it sooner.

Can I mix green coolant with the blue coolant?
Best not. Different chemistries can react, reducing corrosion protection and service life. If the system has been topped with the wrong type, it’s smart to drain, thoroughly flush, and refill with the correct blue long‑life coolant.