Honda Civic 2017 Owner's Manual page 575

uuMaintenance Under the BonnetuEngine Coolant
■
Adding the Coolant
Except 2.0 L engine models
Reserve Tank Cap
2.0 L engine models
Reserve Tank Cap
574
1. Make sure the engine and radiator are
cool.
2. Turn the reserve tank cap 1/8 turn
anticlockwise and relieve any pressure in
the cooling system.
3. Push down and turn the reserve tank cap
anticlockwise to remove it.
4. Pour coolant into the reserve tank until it
reaches the MAX mark.
5. Put the reserve tank cap back on, and
tighten it fully.
1Adding the Coolant
NOTICE
Pour the fluid slowly and carefully so you do not spill
any. Clean up any spills immediately; they can
damage components in the engine compartment.