Honda CIVIC 2014 Manual page 351

Removing the radiator cap while the engine is hot can cause the coolant to spray
out, seriously scalding you.
Always let the engine and radiator cool down before removing the radiator cap.
NOTICE
If temperatures consistently below –30°C are expected, the coolant mixture should be
changed to a higher concentration. Consult your Honda dealer for details about a suitable
coolant mixture.
If Honda antifreeze/coolant is not available, you may use another major brand of non-silicate
coolant as a temporary replacement. Check that it is a high quality coolant recommended for
aluminium engines. Continued use of any non-Honda coolant can result in corrosion,
causing the cooling system to malfunction or fail. Have the cooling system flushed and
refilled with Honda antifreeze/coolant as soon as possible.
Do not add rust inhibitors or other additives to your vehicle's cooling system. They may not
be compatible with the coolant or with the engine components.
■ Reserve Tank
6
Reserve Tank
a
MAX
b
MIN
c
349
WARNING
3
1. Make sure the engine and radiator are cool.
2. Check the amount of coolant in the reserve tank.
u If the coolant level is below the MIN mark, add
the specified coolant until it reaches the MAX
mark.