2020 KIA OPTIMA coolant

723
Maintenance
Recommended coolant
When adding coolant, use onlydeionized water or soft water for
your vehicle and never mix hard
water in the coolant filled at the fac-
tory. An improper coolant mixture
can result in serious malfunction or
engine damage.
The engine in your vehicle has alu- minum engine parts and must be
protected by an ethylene-glycol
with phosphate based coolant to
prevent corrosion and freezing.
DO NOT USE alcohol or methanol coolant or mix them with the spec-
ified coolant.
Do not use a solution that contains more than 60% antifreeze or less
than 35% antifreeze. This would
reduce the effectiveness of the
solution. For mixture percentage, refer to the
following table.
Ambient
Temperature Mixture Percentage
(volume)
Antifreeze Water
-15°C (5°F)35 65
-25°C (-13°F)4060
-35°C (-31°F)5050
-45°C (-49°F)6040OJF075007
OJFH075165

Maintenance
24
7
Changing the coolant
Have the coolant changed by an
authorized Kia dealer according to
the Maintenance Schedule at the
beginning of this chapter.
CAUTION
Put a thick cloth or fabric
around the radiator cap beforerefilling the coolant in order toprevent the coolant from over-flowing into engine parts suchas the generator.
WARNING
Radiator cap
Do not remove the radiator cap
when the engine and radiator
are hot. Scalding hot coolant
and steam may blow out under
pressure which may result in
serious injury.

Maintenance
26
7
WASHER FLUID
Checking the washer fluid
level
The reservoir is translucent so that
you can check the level with a quick
visual inspection.
Check the fluid level in the washer
fluid reservoir and add fluid if neces-
sary. Plain water may be used if
washer fluid is not available.
However, use washer solvent with
antifreeze characteristics in cold cli-
mates to prevent freezing.
WARNING- Flammable
fluid
Do not allow the washer fluid to
come in contact with open
flames or sparks. The windshield
washer fluid reservoir is flamma-
ble under certain circumstances.
This can result in a fire.WARNING- Windshield fluid
Do not drink the windshield
washer fluid. The windshield
washer fluid is poisonous to
humans and animals.
WARNING- Coolant
Do not use radiator coolant or antifreeze in the washer fluid
reservoir.
Radiator coolant can severely obscure visibility when sprayed
on the windshield and may
cause loss of vehicle control.
OJF075009

Maintenance
48
7
Temperature -A, B & C
The temperature grades are A (the
highest), B and C representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled condi-
tions on a specified indoor laboratory
test wheel.
Sustained high temperature can
cause the material of the tire to
degenerate and reduce tire life, and
excessive temperature can lead to
sudden tire failure. Grades B and A
represent higher levels of perform-
ance on the laboratory test wheel
than the minimum required by law. Tire terminology and definitions
Air Pressure:
The amount of air
inside the tire pressing outward on
the tire. Air pressure is expressed in
kilopascal (kPa) or pounds per
square inch (psi).
Accessory Weight: This means the
combined weight of optional acces-
sories. Some examples of optional
accessories are, automatic transmis-
sion, power seats, and air condition-
ing.
Aspect Ratio: The relationship of a
tire's height to its width.
Belt: A rubber coated layer of cords
that is located between the plies and
the tread. Cords may be made from
steel or other reinforcing materials.
Bead: The tire bead contains steel
wires wrapped by steel cords that
hold the tire onto the rim.
Bias Ply Tire: A pneumatic tire in
which the plies are laid at alternate
angles less than 90 degrees to the
centerline of the tread. Cold Tire Pressure:
The amount of
air pressure in a tire, measured in
kilopascals (kPa) or pounds per
square inch (psi) before a tire has
built up heat from driving.
Curb Weight: This means the weight
of a motor vehicle with standard and
optional equipment including the
maximum capacity of fuel, oil and
coolant, but without passengers and
cargo.
DOT Markings: The DOT code
includes the Tire Identification
Number (TIN), an alphanumeric des-
ignator which can also identify the
tire manufacturer, production plant,
brand and date of production.

Maintenance
100
7
Canister
Fuel vapors generated inside the fuel
tank are absorbed and stored in the
onboard canister. When the engine is
running, the fuel vapors absorbed in
the canister are drawn into the surge
tank through the purge control sole-
noid valve.
Purge Control Solenoid Valve
(PCSV)
The purge control solenoid valve is
controlled by the Engine Control
Module (ECM); when the engine
coolant temperature is low during
idling, the PCSV closes so that evap-
orated fuel is not taken into the
engine. After the engine warms up
during ordinary driving, the PCSV
opens to introduce evaporated fuel to
the engine.
3. Exhaust emission control system
The Exhaust Emission Control
System is a highly effective system
which controls exhaust emissions
while maintaining good vehicle per-
formance.
Engine exhaust gas precautions
(carbon monoxide)
Carbon monoxide can be present with other exhaust fumes.
Therefore, if you smell exhaust
fumes of any kind inside your vehi-
cle, have it inspected and repaired
immediately. If you ever suspect
exhaust fumes are coming into
your vehicle, drive it only with all
the windows fully open. Have your
vehicle checked and repaired
immediately.
WARNING - Exhaust
Engine exhaust gases contain
carbon monoxide (CO). Though
colorless and odorless, it is
dangerous and could be lethal if
inhaled. Follow the instructions
on this page to avoid CO poi-
soning.

68
Specification & Consumer information
RECOMMENDED LUBRICANTS AND CAPACITIES
To help achieve proper engine and powertrain performance and durability, use only lubricants of the proper quality.
The correct lubricants also help promote engine efficiency that results in improved fuel economy.
These lubricants and fluids are recommended for use in your vehicle.
*1Refer to the recommended SAE viscosity numbers on the next page.
*2Engine oils labeled Energy Conserving Oil are now available. Along with other additional benefits, they contribute to fuel econo my by reducing
the amount of fuel necessary to overcome engine friction. Often, these improvements are difficult to measure in everyday driving, but in a year’s
time, they can offer significant cost and energy savings.
Lubricant VolumeClassification
Engine oil *1*2
(drain and refill)
Recommends
4.1 l(4.33 US qt.)SAE 5W-20 / API Latest (ILSAC Latest)
Automatic transmission fluid6.0 l (6.34 US qt.)
- ATF SP-IV
(Recommended S-OIL ATF SP-IV, SK ATF SP-IV, MICHANG ATF SP-IV, NOCA ATF SP-IV)
Coolant6.74 l(7.12 US qt.)Mixture of antifreeze and water (Ethylene glycol by phosphate-based
ethylene glycol coolant for aluminum parts)
Inverter coolant3.13 l (3.30 US qt. )Mixture of antifreeze and water (Ethylene glycol by phosphate-based
ethylene glycol coolant for aluminum parts)
Brake0.49 ± 0.02 l
(0.52 ± 0.02 US qt.)DOT 3 or DOT 4
FuelHybrid65 l(17.17 US gal.)Refer to Fuel requirements in chapter 1.Plug-in hybrid55 l(14.52 US gal.)

I3
Index
Brake fluid ....................................................................7-25\
Checking the brake fluid level ....................................7-25
Brake system..................................................................5-19 Anti-lock Brake System (ABS) ..................................5-33
Auto hold ....................................................................5-29\
Electronic Parking Brake (EPB) ................................5-22
Electronic Stability Control (ESC) ............................5-34
Good braking practices ..............................................5-41
Hill-start Assist Control (HAC) ..................................5-40
Parking brake - Foot type ..........................................5-21
Power brakes ..............................................................5-19
Vehicle Stability Management (VSM)........................5-39
Warning messages ......................................................5-31
Bulb wattage ....................................................................8-3
Checking fluid levels ....................................................7-17
Child Restraint System (CRS) ......................................3-33 Children always in the rear ........................................3-33
Installing a Child Restraint System (CRS) ................3-37
Selecting a Child Restraint System (CRS) ................3-34
Clean air ......................................................................4-\
139
Climate control air filter ................................................7-30 Filter inspection ..........................................................7-30
Coolant ........................................................................\
..7-21 Changing the coolant ..................................................7-24
Checking the coolant level..........................................7-21 Engine coolant ............................................................7-22
Inverter coolant ..........................................................7-22
Recommended coolant ................................................7-23
Cruise Control System ..................................................5-72 To cancel cruise control, do one of the following ......5-74
To decrease the cruising speed ..................................5-74
To increase cruise control set speed ..........................5-73
To resume cruising speed at more than approximately 30 km/h (20 mph) ....................................................5-75
To set cruise control speed..........................................5-73
To temporarily accelerate with the cruise control on ..5-74
To turn cruise control off, do one of the following ....5-75
Declaration of Conformity ..........................................4-158 IC ........................................................................\
......4-158
Defroster ......................................................................4-\
120 Rear window defroster ..............................................4-120
Dimensions ......................................................................8-\
2
Door locks......................................................................4-\
13 Child-protector rear door lock ....................................4-16
Impact sensing door unlock system ............................4-16
Operating door locks from inside the vehicle ............4-14
Operating door locks from outside the vehicle ..........4-13
Drive mode integrated control system ..........................5-96 Hybrid vehicle ............................................................5-96
C
D

I11
Index
Winter driving ..............................................................5-136Carry emergency equipment ....................................5-139
Change to "winter weight" oil if necessary ..............5-138
Check battery and cables ..........................................5-138
Check spark plugs and ignition system ....................5-138
Don't let your parking brake freeze ..........................5-139
Don't let ice and snow accumulate underneath ........5-139
Snowy or icy conditions ..........................................5-136
To keep locks from freezing ....................................5-139
Use approved window washer anti-freeze in system .. 5-139
Use high quality ethylene glycol coolant ................5-138
Wiper blades ..................................................................7-32 Blade inspection ..........................................................7-32
Blade replacement ......................................................7-32
Wipers and washers ....................................................4-112 Front windshield washers ........................................4-114
Windshield wipers ....................................................4-112
360° Camera monitoring system ................................4-102
ETC