Coolant Replacement
  1. Start the engine. Set the heater temperature control dial to maximum heat, then turn off the ignition switch. Make sure the engine and radiator are cool to the touch.
  1. Remove the radiator cap.
  1. Loosen the drain plug (A), and drain the coolant.
  1. Remove the drain bolt (A) from the rear side of the engine block.
  1. After the coolant has drained, reinstall the drain bolt with a new washer.
  1. Tighten the radiator drain plug securely.
  1. Drain the engine coolant from the reserve tank.
  1. Fill the reserve tank to the MAX mark (A) with genuine Honda All Season Antifreeze/Coolant Type 2 (P/N OL999-9001).
  1. Pour genuine Honda All Season Antifreeze/Coolant Type 2 into the radiator up to the base of the filler neck.
    NOTE:
    • Always use genuine Honda All Season Antifreeze/Coolant Type 2. Using a non-Honda coolant can result in corrosion, causing the cooling system to malfunction or fall.
    • Genuine Honda All Season Antifreeze/Coolant Type 2 is a mixture of 50 % antifreeze and 50 % water. Do not add water.

    Engine Coolant Capacity (including the reserve tank capacity of 0.44 L (0.116 US gal, 0.097 Imp gal)):

    After Coolant Change: 4.57 L (1.207 US gal, 1.005 Imp gal)
    After Engine Overhaul: 5.06 L (1.337 US gal, 1.113 Imp gal)

  1. Install the radiator cap loosely.
  1. Start the engine and let it run until it warms up (the radiator fan comes on at least twice).
  1. Turn off the engine. Check the level in the radiator and add genuine Honda All Season Antifreeze/Coolant Type 2 if needed.
  1. Put the radiator cap on securely, then run the engine again and check for leaks.
  1. Clean up any spilled engine coolant.