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Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System (5.6L) (Except Hybrid) >> Periodic Maintenance >> Engine Coolant >> Flushing

Engine Coolant: Flushing

  1. Install reservoir tank if removed, and radiator drain plug.
    CAUTION: Be sure to clean drain plug and install with new O-ring.

    SYMBOL

    : 1.2 N.m (0.12 kg-m, 11 in-lb)

    If water drain plug on cylinder block is removed, close and tighten it. Refer to Disassembly and Assembly .

  2. Remove air relief plug (1) on radiator.
    GNSJPBIA3167Z-167Courtesy of NISSAN NORTH AMERICA, INC.

    SYMBOL

    : Vehicle front
  3. Fill water inlet with water until water spills from the air relief holes, then close air relief plugs. Fill water inlet and reservoir tank with water and reinstall radiator cap.

    SYMBOL

    : 1.2 N.m (0.12 kg-m, 11 in-lb)
  4. Run the engine and warm it up to normal operating temperature.
  5. Rev the engine two or three times under no-load.
  6. Stop the engine and wait until it cools down.
  7. Drain water from the system. Refer to Draining .
  8. Repeat steps 1 through 7 until clear water begins to drain from radiator.
  9. Check that the reservoir tank cap is tightened.
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