Always verify the color; it must be a bright orange, not yellow, green, or purple. Traditional green coolants, which often contain silicates and phosphates, can break down over time and form deposits that clog the intricate passages of a Subaru’s Boxer engine.
Subaru AWD Cooling System Fluid and the Right Coolant Type
While some universal coolants claim to be "compatible," relying on these is risky. Signs of Coolant Failure.
Modern Subaru vehicles, whether they feature the horizontally-opposed Boxer engine or the standard all-wheel-drive system, rely on a precise cooling system to maintain optimal performance. When performing a flush, it is not enough to simply drain the radiator.
Subaru AWD Cooling System Fluid and the Right Coolant Type
The Criticality of Mixing Coolants One of the most common mistakes vehicle owners make is mixing different types of coolant. The bottle should state that it meets or exceeds Subaru Standard Specification (WSS) M9823.
More About What coolant does subaru use
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