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Home >> Nissan-Datsun >> 2011 >> Sentra S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Cooling System (Qr25DE)) >> Service Information >> Engine Coolant >> Changing Engine Coolant >> Flushing Cooling System

Flushing Cooling System

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  1. Fill radiator and reservoir tank with water and reinstall radiator cap.
  2. Run engine until it reaches normal operating temperature.
  3. Rev the engine two or three times under no-load.
  4. Stop the engine and wait until it cools down.
  5. Drain water from the cooling system.
  6. Repeat steps  1 through  5 until clear water begins to drain from the radiator.