2008 KIA Optima engine coolant

63
In case of an emergency
4. The coolant level should then be
checked. If the level in the reservoir is
low, look for leaks at the radiator hoses
and connections, heater hoses and
connections, radiator, and water
pump. If you find a major leak or anoth-
er problem that may have caused the
engine to overheat, do not operate the
engine until it has been corrected. Call
an authorized Kia dealer for assis-
tance. If you do not find a leak or other
problem, carefully add coolant to the
reservoir.If the engine frequently overheats, have
the cooling system checked and repaired
by an authorized Kia dealer.
Jump starting Jump starting can be dangerous if done
incorrectly. Therefore, to avoid harm to
yourself or damage to your vehicle or
battery, follow the jump starting proce-
dures. If in doubt, we strongly recom-
mend that you have a competent techni-
cian or towing service jump start your
vehicle.✽ ✽
NOTICEUse only a 12-volt jumper system. You
can damage a 12-volt starting motor,
ignition system, and other electrical
parts beyond repair by use of a 24-volt
power supply (either two 12-volt batter-
ies in series or a 24-volt motor generator
set).
WARNING
- Removing
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. This
could cause serious injury.
EMERGENCY STARTING
WARNING
- Battery
• Keep all flames or sparks away
from the battery. The battery pro-
duces hydrogen gas which may
explode if exposed to flame or
sparks.
 Do not attempt to jump start the
vehicle if the discharged battery
is frozen or if the electrolyte level
is low; the battery may rupture or
explode.
WARNING
- Battery
Never attempt to check the elec-
trolyte level of the battery as this
may cause the battery to rupture or
explode causing serious injury.

73
Maintenance
MAINTENANCE SCHEDULE Engine control system
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM
Kilometers or time in months, whichever comes first
× 1,000 km 8 16 24 32 40 48 56 64 72 80 88 96 104 112 120 128
# Months 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64
Engine oil & engine oil filter (1) R R R R R RRRRRRRR RRR
Drive belts (tension) I I I I
Cooling system hoses & connections I I I I I
Engine coolant (1) I I I I I RIIIIIRI III
Fuel filterRR
Fuel tank cap, lines, EVAP canister and hoses
II
Fuel tank air filter I R I R I
Air cleaner element (2) I I I I I RIIIIIRI III
Ignition wires I I
Spark plugs (Iridium coated)
Idle speed I I I I I
Engine timing belt 2.7 EngineR
Valve clearance (3)I
Replace every 160,000 km

Maintenance6 7Chart symbols:I - Inspect these items and their related parts. If necessary, correct, clean, refill, adjust or replace.
R - Replace or change
L - Lubricate.
(1) Refer to the lubricant and coolant specifications in the Owner’s Manual.
(2) More frequent maintenance is required if driving under dusty conditions.
(3) Inspect for excessive valve noise and/or engine vibration and adjust if necessary. A qualified technician should perform the
operation.
(4) More frequent maintenance is required if the vehicle is operated under any of the following conditions:
a. Short-distance driving.
b. Driving on dusty roads.
c. Extensive idling or slow-speed driving in stop-and-go traffic.
(5) If necessary, rotate and balance the wheels.
* Note: Check the engine oil and coolant levels every week.

77
Maintenance
OWNER MAINTENANCE Owner maintenance schedule The following lists are vehicle checks and
inspections that should be performed by
the owner or an authorized Kia dealer at
the frequencies indicated to help ensure
safe, dependable operation of your vehi-
cle.
Any adverse conditions should be
brought to the attention of your dealer as
soon as possible.
These Owner Maintenance Checks are
generally not covered by warranties and
you may be charged for labor, parts and
lubricants used.When you stop for fuel: Check the engine oil level.
Check coolant level in coolant reser-
voir.
Check the windshield washer fluid
level.
Look for low or under-inflated tires.
While operating your vehicle: Note any changes in the sound of the
exhaust or any smell of exhaust fumes
in the vehicle.
Check for vibrations in the steering
wheel. Notice any increased steering
effort or looseness in the steering
wheel, or change in its straight-ahead
position.
Notice if your vehicle constantly turns
slightly or “pulls” to one side when trav-
eling on smooth, level road.
When stopping, listen and check for
strange sounds, pulling to one side,
increased brake pedal travel or “hard-
to-push” brake pedal.
If any slipping or changes in the oper-
ation of your transaxle occurs, check
the transaxle fluid level.
Check automatic transaxle P (Park)
function.
Check parking brake.
Check for fluid leaks under your vehicle
(water dripping from the air condition-
ing system during or after use is nor-
mal).
At least monthly: Check coolant level in the coolant
recovery reservoir.
Check the operation of all exterior
lights, including the stoplights, turn sig-
nals and hazard warning flashers.
Check the inflation pressures of all
tires including the spare.At least twice a year
(i.e., every Spring and Fall) : Check radiator, heater and air condi-
tioning hoses for leaks or damage.
Check windshield washer spray and
wiper operation. Clean wiper blades
with clean cloth dampened with wash-
er fluid.
Check headlight alignment.
Check muffler, exhaust pipes, shields
and clamps.
Check the lap/shoulder belts for wear
and function.
Check for worn tires and loose wheel
lug nuts.
WARNING
- Radiation
coolant
Be careful when checking your
engine coolant level when the
engine is hot. Scalding hot coolant
and steam may blow out under
pressure. This could cause burns or
other serious injury.

79
Maintenance
ENGINE COMPARTMENT
OMG077001
1. Engine coolant reservoir
2. Engine oil filler cap
3. Brake fluid reservoir
4. Air cleaner
5. Fuse box
6. Negative battery terminal
7. Radiator cap
8. Positive battery terminal
9. Auto transaxle oil dipstick (if equipped)
10. Engine oil dipstick
11. Windshield washer fluid reservoir
12. Power steering fluid reservoir
■ ■
2.4L Gasoline Engine

Maintenance10
7
OMG077002
1. Engine coolant reservoir
2. Engine oil filler cap
3. Brake fluid reservoir
4. Air cleaner
5. Fuse box
6. Negative battery terminal
7. Radiator cap
8. Positive battery terminal
9. Auto transaxle oil dipstick (if equipped)
10. Engine oil dipstick
11. Windshield washer fluid reservoir
12. Power steering fluid reservoir
■ ■
2.7L Gasoline Engine

Maintenance12 7ENGINE COOLING SYSTEM The high-pressure cooling system has a
reservoir filled with year-round antifreeze
coolant. The reservoir is filled at the fac-
tory.
Check the antifreeze protection and
coolant level at least once a year, at the
beginning of the winter season, and
before traveling to a colder climate.Checking the coolant level
Check the condition and connections of
all cooling system hoses and heater
hoses. Replace any swollen or deterio-
rated hoses.
The coolant level should be filled
between F and L marks on the side of the
coolant reservoir when the engine is
cool.
If the coolant level is low, add enough
specified coolant to provide protection
against freezing and corrosion. Bring the
level to F, but do not overfill. If frequent
additions are required, see an authorized
Kia dealer for a cooling system inspec-
tion.
WARNING
- Removing
radiator cap
Never attempt to remove the radi-
ator cap while the engine is oper-
ating or hot. Doing so might lead
to cooling system and engine
damage and could result in seri-
ous personal injury from escap-
ing hot coolant or steam.
(Continued)
(Continued)
Turn the engine off and wait until
it cools down. Use extreme care
when removing the radiator cap.
Wrap a thick towel around it, and
turn it counterclockwise slowly to
the first stop. Step back while the
pressure is released from the
cooling system. When you are
sure all the pressure has been
released, press down on the cap,
using a thick towel, and continue
turning counterclockwise to
remove it.
Even if the engine is not operat-
ing, do not remove the radiator
cap or the drain plug while the
engine and radiator are hot. Hot
coolant and steam may still blow
out under pressure, causing seri-
ous injury.
OMG075005

713
Maintenance
Engine coolant Use only soft (de-mineralized) water in
the coolant mixture.
The engine in your vehicle has alu-
minum engine parts and must be pro-
tected by an ethylene-glycol-based
coolant to prevent corrosion and freez-
ing.
DO NOT USE alcohol or methanol
coolant or mix them with the specified
coolant.
Do not use a solution that contains
more than 60% antifreeze or less than
35% antifreeze, which would reduce
the effectiveness of the solution.For mixture percentage, refer to the fol-
lowing table.
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 caus-
ing serious injury.
5°F (-15°C) 35 65
-13°F (-25°C) 40 60
-31°F (-35°C) 50 50
-49°F (-45°C) 60 40Ambient
TemperatureMixture Percentage (volume)
Coolant
SolutionWater
OMG075006