Coolant Replacement

Start the engine. Set the heater temperature control dial to maximum heat, then turn off the engine. Make sure the engine and radiator are cool to the touch.
Remove the radiator cap.
Loosen the drain plug (A), and drain the coolant.

Fig 1: Loosening Drain Plug
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the drain bolt (A) from the rear side of the cylinder block.

Fig 2: Removing Drain Bolt
Courtesy of AMERICAN HONDA MOTOR CO., INC.
After the coolant has drained, apply liquid gasket to the drain bolt threads, then reinstall the bolt with a new washer and tighten it securely.
Tighten the radiator drain plug securely.
Remove, drain and reinstall the reservoir. Fill the tank to the MAX mark with Honda All Season Antifreeze/Coolant Type 2.

NOTE:

Always use Honda All Season Antifreeze/Coolant Type 2. Using a non-Honda coolant can result in corrosion, causing the cooling system to malfunction or fail.
Honda All Season Antifreeze/Coolant Type 2 is a mixture of 50% antifreeze and 50% water Premixing is not required.

Fig 3: Locating Air Bleed Bolt

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Loosen the air bleed bolt (A) in the thermostat housing, then pour Honda All Season Antifreeze/Coolant Type 2 into the radiator to the bottom of the filler neck. Do not let coolant spill on any electrical parts or the paint. If the any coolant spills, rinse it off immediately.
Engine Coolant Refill Capacity [including the reservoir capacity of 0.6 l (0.6 US qt, 0.5 lmp qt)]:
1. M/T: 5.5 l (5.8 US qt, 4.8 lmp qt)
2. A/T: 5.4 l (5.7 US qt, 4.8 lmp qt)
Tighten the bleed bolt as soon as coolant starts to run out in a steady stream.
With the radiator cap off, start the engine and let it run until warmed up (radiator fan comes on at least twice). Then, if necessary, add more Honda All Season Antifreeze/Coolant Type 2 to bring the level back up to the bottom of the filler neck.
Put the radiator cap on tightly, then run the engine again and check for leaks.