If you are ever uncertain, deionized water can be used as a temporary emergency top-up, but a proper flush and refill with the correct Subaru coolant is the recommended solution. This guide breaks down the specific type of coolant required, the significance of the orange color, and the strict standards set by Subaru for the longevity of your vehicle.
Subaru Coolant Maintenance: Choosing the Right Type and Avoiding Mistakes
Even when topping off the coolant level, it is imperative to use the exact same type. Signs of Coolant Failure.
While some universal coolants claim to be "compatible," relying on these is risky. Identifying the Correct Product When purchasing coolant, whether at a dealership or an auto parts store, you must look for specific labeling.
Subaru Coolant Maintenance: Choosing the Correct OEM Coolant Type
Subaru’s Organic Acid Technology (OAT) coolant, however, uses different chemical compounds that inhibit corrosion without the need for phosphates. Subaru explicitly states that this Orange Coolant (Subaru Part Number 99086) should be used for all initial fills and subsequent replacements to uphold the vehicle's warranty and cooling efficiency.
More About What coolant does subaru use
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