Kia K5 2021 Owner's Manual page 504

Maintenance
be protected by an ethylene-gly-
col with phosphate based coolant
to prevent corrosion and freezing.
Do not use a solution that con-
tains more than 60% antifreeze
or less than 35% antifreeze,
which would reduce the effective-
ness of the solution.
The cooling circuit of a vehicle
equipped with a heat pump sys-
tem may freeze in extremely low
temperature when the concen-
tration of the antifreezing liquid is
below 45%.
For mixture percentage, refer to the
following table.
Mixture Percentage (volume)
Ambient Tem-
perature
Antifreeze
5 F (-15 C)
-13 F (-25 C)
-31 F (-35 C)
-49 F (-45 C)
WARNING
Engine coolant res-
ervoir cap
Do not remove the
engine coolant res-
ervoir cap when the engine and
engine coolant reservoir are hot.
Scalding hot coolant and steam may
blow out under pressure which may
result in serious injury.
7 20
Water
35 65
40 60
50 50
60 40
ODL3A070096
NOTICE
Make sure the engine coolant reser-
voir cap is properly closed after refill
or coolant.
Otherwise the engine could be over-
heated while driving.
1. Check if the engine coolant reser-
voir cap label is straight In front.
Engine room front view
ODL3A070108
Engine coolant