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2003
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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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Engine
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Engine Lubrication
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Description and Operation
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Oil Cooler (Turbo Models Only)
Oil Cooler (Turbo Models Only)
Oil Cooler (Turbo Models Only)
The oil cooler used in turbo models is of a water cooled type. It serves to maintain engine oil in proper temperature range and so prevent degradation of lubricating oil performance.