Subaru's Specific Coolant Requirements Unlike many manufacturers that use universal green coolants, Subaru specifies a unique Long Life Coolant (LLC) that is ethylene glycol-based and dyed a distinctive bright orange. Signs of Coolant Failure.
Understanding Subaru Coolant Color and Its Importance
Combining Subaru’s orange OAT formula with a conventional green silicate-based coolant can create a thick, sludge-like mixture. Subaru’s Organic Acid Technology (OAT) coolant, however, uses different chemical compounds that inhibit corrosion without the need for phosphates.
This sludge can obstruct the heater core, leading to a lack of cabin heat, or it can coat the water pump, leading to premature failure and overheating. The Criticality of Mixing Coolants One of the most common mistakes vehicle owners make is mixing different types of coolant.
Understanding Subaru Coolant Color and Its Importance
The formulation is designed to be compatible with the aluminum alloys found in the radiator and engine blocks of models like the Forester, Outback, and Legacy. When performing a flush, it is not enough to simply drain the radiator.
More About What coolant does subaru use
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