2008 KIA Optima oil change

Driving your vehicle54 4Air conditioning system opera-
tion tips If the vehicle has been parked in direct
sunlight during hot weather, open the
windows for a short time to let the hot
air inside the vehicle escape.
To help reduce moisture inside of win-
dows on rainy or humid days, decrease
the humidity inside the vehicle by oper-
ating the air conditioning system.
During air conditioning system opera-
tion, you may occasionally notice a
slight change in engine speed as the
air conditioning compressor cycles.
This is a normal system operation
characteristic.
Use the air conditioning system every
month if only for a few minutes to
ensure maximum system perform-
ance.
When using the air conditioning sys-
tem, you may notice clear water drip-
ping (or even pudding) on the ground
under the passenger side of the vehi-
cle. This is a normal system operation
characteristic. Operating the air conditioning system
in the recirculated air position does
provide maximum cooling, however,
continual operation in this mode may
cause the air inside the vehicle to
become stale.
Checking the amount of air con-
ditioner refrigerant and compres-
sor lubricantWhen the amount of refrigerant is low,
the performance of the air conditioning is
reduced. Overfilling also has a bad influ-
ence on the air conditioning system.
Therefore, if abnormal operation is
found, have the system inspected by an
authorized Kia dealer.✽ ✽
NOTICEWhen the performance of the air condi-
tioning system is reduced it is important
that the correct type and amount of oil
and refrigerant is used. Otherwise, dam-
age to the compressor and abnormal
system operation may occur.
CAUTION
The air conditioning system should
be serviced by an authorized Kia
dealer. Improper service may cause
serious injury to the person per-
forming the service.

Driving your vehicle62 4Air conditioning system opera-
tion tips If the vehicle has been parked in direct
sunlight during hot weather, open the
windows for a short time to let the hot
air inside the vehicle escape.
To help reduce moisture inside of win-
dows on rainy humid days, decrease
the humidity inside the vehicle by oper-
ating the air conditioning system.
During air conditioning system opera-
tion, you may occasionally notice a
slight change in engine speed as the
air conditioning compressor cycles on.
This is a normal system operation
characteristics.
Use the air conditioning system every
month if only for a few minutes to
ensure maximum system perform-
ance.
When using the air conditioning sys-
tem, you may notice clear water drip-
ping (or even pudding) on the ground
under the passenger side of the vehi-
cle. This is a normal system operation
characteristics. Operating the air conditioning system
in the recirculated air position does
provide maximum cooling, however,
continual operation in this mode may
cause the air inside the vehicle to
become stale.
✽ ✽
NOTICEWhen using the air conditioning system,
monitor the temperature gauge closely
while driving up hills or in heavy traffic
when outside temperatures are high. Air
conditioning system operation may
cause engine overheating. Continue to
use the blower fan but turn the air con-
ditioning system off if the temperature
gauge indicates engine overheating.
Checking the amount of air con-
ditioner refrigerant and compres-
sor lubricantWhen the amount of refrigerant is low,
the performance of the air conditioning is
reduced. Overfilling also has a bad influ-
ence on the air conditioning system.
Therefore, if abnormal operation is
found, have the system inspected by an
authorized Kia dealer.✽ ✽
NOTICEWhen the performance of the air condi-
tioning system is reduced it is important
that the correct type and amount of oil
and refrigerant is used. Otherwise, dam-
age to the compressor and abnormal
system operation may occur.
CAUTION
The air conditioning system should
be serviced by an authorized Kia
dealer. Improper service may cause
serious injury.

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.

711
Maintenance
ENGINE OILChecking the engine oil level 1. Be sure the vehicle is on level ground.
2. Start the engine and allow it to reachnormal operating temperature.
3. Turn the engine off and wait for a few minutes (about 5 minutes) for the oil to
return to the oil pan.
4. Pull the dipstick out, wipe it clean, and re-insert it fully.
5. Pull the dipstick out again and check the level. The level should be between
F and L. If it is near or at L, add enough oil to bring
the level to F.
Do not overfill.
Use only the specified engine oil. (Refer
to “Recommended Lubricants” later in this section.)
✽ ✽ NOTICEAlthough oil filters may have the same
external appearance, their internal
designs differ significantly. These filters
are not interchangeable. To avoid poten-
tial engine damage, use only the speci-
fied filter. Consult an authorized Kia
dealer.
WARNING -
Radiator hose
Be very careful not to touch the
radiator hose when checking or
adding the engine oil as it may be
hot enough to burn you.
WARNING
Used engine oil may cause irritation
or cancer of the skin if left in con-
tact with the skin for prolonged
periods of time. Used engine oil
contains chemicals that have
caused cancer in laboratory ani-
mals. Always protect your skin by
washing your hands thoroughly
with soap and warm water as soon
as possible after handling used oil.
OMG077003
OMG077004

717
Maintenance
New automatic transaxle fluid should
be red. The red dye is added so the
assembly plant can identify it as auto-
matic transaxle fluid and distinguish it
from engine oil or antifreeze. The red
dye, which is not an indicator of fluid
quality, is not permanent. As the vehi-
cle is driven, the automatic transaxle
fluid will begin to look darker. The
color may eventually appear light
brown.✽ ✽
NOTICEHave an Authorized Kia dealer inspect
or change the automatic transaxle fluid
according to the Scheduled
Maintenance at the beginning of this
section.Changing automatic transaxle
fluidHave automatic transaxle fluid changed
by an authorized Kia dealer according to
the Maintenance Schedule at the begin-
ning of this section.
Use only the specified automatic
transaxle fluid. (Refer to "Recommended
Lubricants" later in this section.)
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 necessary. 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.
Body lubrication All moving points of the body, such as
door hinges, hood hinges, and locks,
should be lubricated each time the
engine oil is changed. Use a non-freez-
ing lubricant on locks during cold weath-
er.
Make sure the engine hood secondary
latch keeps the hood from opening when
the primary latch is released.
LUBRICANTS AND FLUIDS
WARNING
- Coolant
Do not use radiator coolant or
antifreeze in the washer fluid
reservoir.
(Continued)
(Continued)
Radiator coolant can severely
obscure visibility when sprayed
on the windshield and may cause
loss of vehicle control or damage
to paint and body trim.
Windshield washer fluid agents
contain some amounts of alcohol
and can be flammable under cer-
tain circumstances. Do not allow
sparks or flame to contact the
washer fluid or the washer fluid
reservoir. Damage to the vehicle
or it's occupants could occur.
Windshield washer fluid is poi-
sonous to humans and animals.
Do not drink and avoid contacting
windshield washer fluid. Serious
injury or death could occur.
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735
Maintenance
LUBRICANT SPECIFICATIONSRecommended lubricants 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.
Engine oils labeled Energy Conserving Oil are now available.
Along with other additional benefits, they contribute to fuel
economy by reducing the amount of fuel necessary to over-
come 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.
Recommended SAE viscosity number ✽ ✽
NOTICEAlways be sure to clean the area around any filler plug, drain
plug, or dipstick before checking or draining any lubricant.
This is especially important in dusty or sandy areas and when
the vehicle is used on unpaved roads. Cleaning the plug and
dipstick areas will prevent dirt and grit from entering the
engine and other mechanisms that could be damaged. Engine oil viscosity (thickness) has an effect on fuel economy
and cold weather operating (starting and oil flow). Lower vis-
cosity engine oils can provide better fuel economy and cold
weather performance, however, higher viscosity engine oils are
required for satisfactory lubrication in hot weather. Using oils of
any viscosity other than those recommended could result in
engine damage.
When choosing an oil, consider the range of temperature your
vehicle will be operated in before the next oil change. Proceed
to select the recommended oil viscosity from the chart.
*¹ Refer to the recommended SAE viscosity numbers.These lubricants and fluids are recommended for use in your
vehicle.
Lubricant Classification
API Service SJ, SL or above,
ILSAC GF-3 or above
Manual transaxle fluidAPI Service GL-4
(SAE 75W-85, fill-for-life)
DIAMOND ATF SP-III, SK ATF SP-III
Power steering fluid PSF-IV
Brake/Clutch fluid FMVSS116 DOT-3 or DOT-4
Engine oil
*¹
Automatic transaxle fluid
Temperature Range for SAE Viscosity Numbers
Temperature
Engine Oil *
1°C
(°F)
-30 -20 -10 0 10 20 30 40 50
-10 0 20 40 60 80 100 120
1. For better fuel economy, it is recommended to use the engine oil of a viscosity
grade SAE 5W-20, 5W-30 (API SJ, SL / ILSAC GF-3).
20W-5015W-4010W-30
5W-20, 5W-30

Specifications4 8*1Refer to the recommended SAE viscosity numbers in chapter 7.Lubricant Volume Classification
Engine oil
*1
4.3 l(4.5 US qt.) API Service SJ, SL or above,
(with filter change) 4.5 l(4.7 US qt.) ILSAC GF-3 or above
Manual transaxle fluid 1.9 l(2.0 US qt.) API Service GL-4 (SAE 75W-85, fill for-life)
Automatic transaxle fluid 9.5 l(10.0 US qt.) DIAMOND ATF SP-III, SK ATF SP-III
Power steering 0.8 l( 0.8 US qt.) PSF-IV
Coolant 6.4~6.9 l(6.8~7.3 US qt.)
Ethylene glycol base for aluminum radiator
8.2~8.3 l(8.7~8.8 US qt.)
Brake/Clutch fluid 0.7~0.8 l(0.7~0.8 US qt.) FMVSS116 DOT-3 or DOT-4
Fuel 62 l(16.4 US gal) Unleaded gasoline with AKI 87 or higher
2.4L Engine
2.7L Engine2.4L Engine
2.7L Engine
Capacities