2008 KIA Optima engine

723
Maintenance
✽ ✽
NOTICE• Before performing maintenance or
recharging the battery, turn off all
accessories and stop the engine.
• The negative battery cable must be
removed first and installed last when
the battery is disconnected.
WARNING
- Recharging
battery
When recharging the battery,
observe the following precautions:
The battery must be removed
from the vehicle and placed in an
area with good ventilation.
Do not allow cigarettes, sparks, or
flame near the battery.
Watch the battery during charg-
ing, and stop or reduce the charg-
ing rate if the battery cells begin
gassing (boiling) violently or if
the temperature of the electrolyte
of any cell exceeds 49°C (120°F).
Wear eye protection when check-
ing the battery during charging.
Disconnect the battery charger in
the following order.
1. Turn off the battery charger main
switch.
2. Unhook the negative clamp from
the negative battery terminal.
3. Unhook the positive clamp from
the positive battery terminal.

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

Maintenance36 7EXTERIOR CARE Exterior general caution It is very important to follow the label
directions when using any chemical
cleaner or polish. Read all warning and
caution statements that appear on the
label.Finish maintenanceWashing To help protect your vehicle’s finish from
rust and deterioration, wash it thoroughly
and frequently at least once a month with
lukewarm or cold water.
If you use your vehicle for off-road driv-
ing, you should wash it after each off-
road trip. Pay special attention to the
removal of any accumulation of salt, dirt,
mud, and other foreign materials. Make
sure the drain holes in the lower edges of
the doors and rocker panels are kept
clear and clean.
Insects, tar, tree sap, bird droppings,
industrial pollution and similar deposits
can damage your vehicle’s finish if not
removed immediately.
Even prompt washing with plain water
may not completely remove all these
deposits. A mild soap, safe for use on
painted surfaces, may be used.After washing, rinse the vehicle thor-
oughly with lukewarm or cold water. Do
not allow soap to dry on the finish.
✽ ✽
NOTICEDo not use strong soap, chemical deter-
gents or hot water, and do not wash the
vehicle in direct sunlight or when the
body of the vehicle is warm.
WARNING
- Wet brakes
After washing the vehicle, test the
brakes while driving slowly to see if
they have been affected by water. If
braking performance is impaired,
dry the brakes by applying them
lightly while maintaining a slow for-
ward speed.
OJB037800
CAUTION
Water washing in the engine com-
partment including high pressure
water washing may cause the fail-
ure of electrical circuits located in
the engine compartment.
Never allow water or other liquids
to come in contact with electri-
cal/electronic components inside
the vehicle as this may damage
them.

83
Specifications
Engine
Item 2.4L Engine 2.7L Engine
BoreXStroke 88mm x 97 mm (3. 46 in x 3. 82 in.) 86.7 mm X 75 mm (3.41 in X 2.95 in)
Displacement 2359 cc (143. 90 cu. in) 2656 cc (1621 cu.in)
Compression Ratio 10. 5 : 1 10. 4 : 1
Item 2.4L Engine 2.7L Engine
Battery 12V / 68AH (20HR) 12V / 68AH (20HR)
Generator 13.5V / 110A 13.5V / 130A
Starter 12V-1.2kW 12V-1.2kW
Gap
1.0 mm ~ 1.1 mm (0.039 ~ 0.043 in) 1.0 mm ~ 1.1
mm
(0.039 ~ 0.043 in
)
Iridium coated SK16PR-A11 ILFR5B-11
Spark
Plug
Spec.Electrical system
WeightsRefer to the compliance label describing GVWR & GAWR weights attached to your vehicle.
(see page 5-15, Label information)

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

Index2 9Air bags-supplemental restraint system ····················3-48
Air cleaner ····································································7-18
Antenna ·········································································3-93
Audio remote control···················································3-94
Audio system ································································3-95
Automatic climate control···········································4-55
Automatic transaxle ·············································4-6, 7-16
Battery···········································································7-21
Before driving·································································5-4
Brake fluid ····································································7-14
Brake system ································································4-10
Climate control air filter ·············································7-19
Compass - Z-Nav™ compass ······································4-36
Cruise control system ··················································4-18
Defroster ·······································································4-46
Door locks ·····································································3-10
Drive belts ·····································································7-15Electrical circuit protection ··········································6-6
Electronic stability control ··········································4-21
Emergency starting························································6-3
Emission control system ················································5-2
Engine compartment ··············································2-4, 7-9
Engine cooling system ·················································7-12
Engine oil ······································································7-11
Exterior care·································································7-36
Fuel filler lid ·································································3-72
Fuel requirements ··························································5-2
Gauges ···········································································4-25
Hazard warning flasher ··············································4-47
Homelink® wireless control system ···························3-79
Hood ··············································································3-71
How to use this manual ·················································1-2ABC
E
D
FGH

93
Index
If you have a flat tire ···················································6-18
Ignition switch ································································4-2
Immobilizer system ························································3-8
Instrument cluster ·······················································4-24
Instrument panel overview ···········································2-3
Interior care··································································7-38
Interior features ···························································3-86
Interior lights ·······························································3-83
Interior overview····························································2-2
Keys ·················································································3-2
Label information ························································5-15
Lighting ·········································································4-40
Lubricant specifications ··············································7-35
Lubricants and fluids ··················································7-17
Luggage net ··································································3-92
Maintenance schedule ···················································7-3
Maintenance services ·····················································7-2
Manual climate control system···································4-48
Manual transaxle ···························································4-4
Mirrors ··········································································3-75Overheating ····································································6-2
Overloading ··································································5-14
Owner maintenance ·······················································7-7
Power steering ······························································7-15
Rear parking assist system··········································4-46
Remote keyless entry ·····················································3-4
Road warning ·································································6-2
Safety belts····································································3-28
Seat ················································································3-18
Special driving conditions ·············································5-6
Specifications ··································································8-2
Starting the engine ·························································4-3
Steering wheel·······························································4-16
Storage compartment ··················································3-84
Suggestions for economical operation··························5-5
Sunroof ··········································································3-90KILM
OSPR