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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 >> Draining

Engine Coolant: Draining

WARNING:
  • Never change engine coolant when the engine is hot to avoid being scalded.
  • Wrap a thick cloth around radiator cap and carefully remove radiator cap. First, turn radiator cap a quarter of a turn to release built-up pressure. Then turn radiator cap all the way.
  • Never spill engine coolant on drive belt.
  1. Connect drain hose.
    NOTE: Use a general-purpose hose with the dimensions shown in the figure.
    GNSJPBIA4770Z-770Courtesy of NISSAN NORTH AMERICA, INC.

    A

    : 15 - 16 mm (0.59 - 0.63 in)

    B

    : 145 mm (5.17 in)

  2. Open radiator drain plug (1) at the bottom of radiator, and then remove radiator cap.
    GNSJPBIA3169Z-169Courtesy of NISSAN NORTH AMERICA, INC.

    A

    : Radiator drain plug hole

    SYMBOL

    : Vehicle front

    When draining all of engine coolant in the system, open water drain plug on cylinder block. Refer to Disassembly and Assembly .

  3. Remove reservoir tank if necessary, and drain engine coolant and clean reservoir tank before installing.
  4. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.

    If contaminated, flush the engine cooling system. Refer to Flushing .

  5. Disconnect drain hose.