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Subaru
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2004
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Impreza F4-2.5L SOHC
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Cooling System
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Thermostat
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Specifications
Thermostat: Specifications
Starts to open
76 - 80°C (169 - 176°F)
Fully opens
91 °C (196°F)