Which coolant does Subaru use?
Subaru generally specifies using Subaru Genuine Engine Coolant, a blue, ethylene glycol-based long-life coolant. The exact formulation your vehicle requires depends on model year and regional market, so always verify with the owner's manual or a Subaru dealer.
Understanding Subaru's coolant formulations
Subaru has produced several coolant formulations over the years. In modern vehicles, the recommended coolant is Subaru Genuine Long Life Coolant, designed to work with Subaru cooling systems and aluminum engines. Some older models or regional specs may call for a different Subaru-approved formula. Always verify the specification for your vehicle before purchasing any coolant.
Key takeaways
To help you identify the right coolant, keep these guidelines in mind:
- Use Subaru Genuine Engine Coolant or an equivalent coolant that meets Subaru’s specification. Substituting an incompatible product can affect cooling performance and warranty coverage.
- Choose a premixed 50/50 coolant unless your manual specifies using concentrate to mix with distilled water.
- Avoid mixing different coolant formulations or brands unless explicitly approved by Subaru; incompatible mixes can form sediments or reduce protection.
- Do not rely on color as a sole indicator of compatibility; always confirm the coolant's specification in the manual or with a dealer.
Following these guidelines helps ensure the cooling system remains effective and within Subaru’s design parameters.
Maintenance and replacement guidance
Regular checks and timely replacement help prevent overheating and engine wear. Follow your manual for service intervals, and use Subaru-approved coolant for any top-ups or flushes.
- Check the coolant level when the engine is cold to avoid burns, and top up with the correct coolant mixture if needed.
- Follow the recommended replacement interval from your owner’s manual or dealer guidance; many modern Subarus use a long-life coolant with intervals that can range from several years up to 100,000 miles, depending on market and model.
- If the cooling system has become contaminated or you’re flushing after a leak, perform a thorough flush and refill with the proper Subaru coolant to restore the system.
- When in doubt, seek professional service at a Subaru dealer or certified shop to ensure proper mixture, air purge, and system integrity.
Proper maintenance ensures consistent cooling performance and protects the engine’s aluminum components.
Summary
Subaru typically requires Subaru Genuine Engine Coolant (often marketed as Subaru Long Life Coolant) that meets Subaru specifications. The exact formulation depends on model year and region, so always verify with the owner’s manual or a dealer. Use the correct coolant, avoid mixing incompatible products, and follow the recommended service intervals to maintain optimal cooling system health.
Can I use universal coolant in my Subaru?
Nope. Use OEM Subaru Supercoolant.
What is the difference between green and blue Subaru coolant?
Subaru OEM coolant is green or blue. Green's anti-corrosion additives cover everything inside the cooling system. Blue's anti- corrosion additives have some chemical reaction, where it only covers what can corrode.
What type of coolant goes in a Subaru Outback?
Shop Subaru Outback Super Coolant 50/50 PREDILUTED Antifreeze. Formulated for long-lasting corrosion and Corrosion, Fluids - OEM Subaru Part # SOA868V9270 (SOA868V9272)
Do subarus need special coolant?
Yes, Subarus need a specific coolant, primarily the factory-filled "Super Coolant," which is a special blue Subaru coolant. Before 2008, Subarus used a long-life green coolant. While a high-quality universal Asian blue coolant can be used, it's crucial to use the correct type for your specific Subaru model and year to ensure proper corrosion protection, especially for its aluminum engine components.
Coolant types and considerations
- Blue Subaru Super Coolant: This is the current standard, introduced after 2008, and is a premixed, long-life formula designed specifically for Subaru's aluminum engines. It has a much longer service interval than older coolants.
- Green Subaru Long Life Coolant: This was used in Subarus before 2008. It is an ethylene glycol-based coolant that is not premixed and requires mixing with water to the correct ratio, which can be more challenging to get right.
- Universal Asian Blue Coolant: A high-quality universal Asian blue coolant can be used as a substitute for Subaru's blue Super Coolant. This coolant is also designed to protect aluminum engines and can be a good option if you can't get the Subaru-brand product.
Important tips
- Always check your owner's manual: The most accurate information for your specific Subaru model will be in your owner's manual.
- Don't mix coolants: Never mix green and blue coolant, as they are not formulated to be compatible with each other.
- Consider the warranty: If your car is still under warranty, using the specified Subaru coolant is recommended to avoid voiding the warranty.
- Don't use universal coolants indiscriminately: While some universal coolants may work, it's crucial to ensure the universal coolant is specifically formulated for Asian vehicles to protect against corrosion and other damage.
