Remove the drain bolt (A) from the rear side of the engine block.
2.
After the coolant has drained, reinstall the drain bolt with a new washer.
3.
Tighten the radiator drain plug securely.
Radiator Coolant - Replacement (Natural Gas Model)
1.
Follow the chart and pour coolant into the radiator up to the base of the filler neck.
NOTE:
Use Honda Long Life Antifreeze/Coolant Type 2, and if necessary add Honda Extreme Cold Weather Antifreeze/Coolant Type 2 (concentrate). Using a non-Honda coolant can result in corrosion, causing the cooling system to malfunction or fail.
Honda Long Life Antifreeze/Coolant Type 2 is a mixture of 50 % antifreeze and 50 % water. Honda Extreme Cold Weather Antifreeze/Coolant Type 2 is a 100% concentration coolant. Do not add water to either coolant.
If the vehicle is regularly driven in very low temperatures (below -22 °F ( -30 °C)), a 60 % concentration of coolant should be used.
Operation
Vehicle Usage (Desired Mixture)
Current Mixture
Coolant Drain
Add Amount of Honda Extreme Cold Weather Antifreeze/Coolant Type 2 (100% concentrate)
Then add Honda Long Life Antifreeze/Coolant Type 2 (50/50)
Coolant Change
Normal Area (50/50)
50/50 60/40 unknown
Drain radiator, engine block, and reservoir
None
Top off the cooling system
Very Cold Area (60/40)
50/50 unknown
Drain radiator, engine block, and reservoir
About 1.3 L (44 fl oz)
60/40
About 1.1 L (37 fl oz)
Engine Overhaul
Normal Area (50/50)
-
-
None
Very Cold Area (60/40)
-
-
About 1.1 L (37 fl oz)
Coolant Winterizing
Very Cold Area (60/40)
50/50
Drain about 2.0 L (68 fl oz) from radiator
About 1.1 L (37 fl oz)
unknown*
Drain radiator, engine block, and reservoir
*: When you want to winterize the coolant with the minimum amount of coolant change but the current coolant concentration in the vehicle is unknown, you must drain all coolant from the cooling system.
Engine Coolant Capacities (Including the coolant reservoir capacity of 0.475 L (0.1255 US gal))
At Coolant Change
5.50 L (1.453 US gal)
After Engine Overhaul
6.51 L (1.720 US gal)
HDS DLC - Connection
1.
Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
2.
Turn the ignition switch to ON (II).
3.
Make sure the HDS communicates with the vehicle. If it does not communicate, go to the DLC circuit troubleshooting.
Maintenance Minder Reset
1.
After doing all procedures, select the individual maintenance item you wish to reset with the HDS..
?
Test yourself
A quick Honda Civic quiz: every answer comes with an explanation and a link to the manual page.
1.5mmn-mm
