2003 Lexus IS300 recommended oil

DRIVING TIPS
260

Do not continue normal driving when the brakes are
wet. If they are wet, your vehicle will require a longer
stopping distance, and it may pull to one side when
the brakes are applied. Also, the parking brake will
not hold the vehicle securely.WINTER DRIVING TIPS
Make sure you have a proper freeze protection of engine
coolant.
Your coolant must contain ethylene±glycol type coolant for a
proper corrosion protection of aluminum components. Use
ºToyota Genuine Long Life Coolantº or equivalent. See
ºChecking the engine coolant levelº on page 319 for
instructions.
NOTICE
Do not use alcohol type antifreeze or plain water alone.
When it is extremely cold, we recommend to use 60% solution
for your Lexus, to provide protection down to about ±50 C
(±58 F). Do not use more than 70% solution for better coolant
performance.
Check the condition of the battery and cables.
Cold temperatures reduce the capacity of any battery, so it
must be in top shape to provide enough power for winter
starting. Page 348 tells you how to visually inspect the battery.
Your Lexus dealer and most service stations will be pleased to
check the battery charge level.
Make sure the engine oil viscosity is suitable for the cold
weather.
See page 317 for recommended viscosity. Leaving a heavy
summer oil in your vehicle during winter months may cause
harder starting. If you are not sure about which oil to use, call
your Lexus dealer ± they will be pleased to help.
2003 IS300 from Aug. '02 Prod. (OM53439U)

INTRODUCTION
303
NOTICE

Remember that battery and ignition cables carry high
currents or voltages. Be careful of accidentally causing a short circuit.

Before closing the engine hood, check to see that you
have not forgotten any tools, rags, etc.

Do not drive with the air cleaner removed, or excessive engine wear could result. Also backfiringcould cause a fire in the engine compartment.

Do not overfill automatic transmission fluid, or thetransmission could be damaged.

Be careful not to scratch the glass surface with thewiper frame.
PARTS AND TOOLS
Here is a list of parts and tools you will need to perform
do±it±yourself maintenance. Remember all Lexus parts are
designed in metric sizes, so your tools must be metric.
CHECKING THE ENGINE OIL LEVEL
Parts (if level is low):

ºToyota Genuine Motor Oilº or equivalent
Oil grade: API grade SL ºEnergy±Conservingº or ILSAC
multigrade engine oil. For recommended oil viscosity, see
page 317.
Tools:

Rag or paper towel

Funnel (only for adding oil)
CHECKING THE ENGINE COOLANT LEVEL
Parts (if level is low):

ºToyota Genuine Long Life Coolantº or equivalent
See ºChecking the engine coolant levelº on page 319 for
instructions.

Demineralized or distilled water
Tools:

Funnel (only for adding coolant)
2003 IS300 from Aug. '02 Prod. (OM53439U)

ENGINE
309
± LUBRICATION SYSTEM
Oil capacity Drain and refillwith filter
without filter
5.4 L (5.7 qt., 4.8 lmp.qt.)
5.1 L (5.4 qt., 4.5 lmp.qt.)
Oil gradeAPI grade SL ºEnergy±Conservingº or ILSAC multigrade engine oil\
Recommended oil viscosity (SAE):
62L005±1S
OIL14
Outside temperature
NOTE:
ºToyota Genuine Motor Oilº is filled in your Lexus vehicle. Use Lexus a\
pproved ºToyota Genuine Motor Oilº or equivalent to sati sfy
the above grade and viscosity. Please contact your Lexus dealer for further details.
2003 IS300 from Aug. '02 Prod. (OM53439U)

ENGINE
317
NOTICE
Be careful not to spill the engine oil on the vehiclecomponents.
Avoid overfilling, or the engine could be damaged.Check the oil level on the dipstick once again afteradding the oil.
Engine oil selection
ºToyota Genuine Motor Oilº is filled in your Lexus vehicle. Use
Lexus approved ºToyota Genuine Motor Oilº or equivalent to
satisfy the following grade and viscosity.
Oil grade:
API grade SL ºEnergy±Conservingº or ILSAC multigrade
engine oil.
Recommended viscosity (SAE):
SOIL14
Outside temperature
SAE 5W±30 is the best choice for good fuel economy, and
good starting in cold weather.
If SAE 5W±30 oil is not available, SAE 10W±30 oil may be
used. However, it should be replaced with SAE 5W±30 at
the next oil change.
2003 IS300 from Aug. '02 Prod. (OM53439U)

CHASSIS
324
SPECIFICATIONS
± MANUAL TRANSMISSIONOil capacity
2.6 L (2.7 qt., 2.3 lmp.qt.)
Oil typeMultipurpose gear oil API GL±4 or GL±5
Recommended oil viscositySAE 75W±90
± DIFFERENTIALOil capacity
1.15 L (1.22 qt., 1.01 lmp.qt.)
Oil typeHypoid gear oil API GL±5
Oil viscosityAbove ±18C (0F): SAE 90
Below ±18 C (0F): SAE 80W or SAE 80W±90
± AUTOMATIC TRANSMISSION
Fluid capacity Drain and refill
2.0 L (2.1 qt., 1.8 lmp.qt.)
Fluid typeToyota Genuine ATF Type T ± IV*
*Change automatic transmission fluid only as necessary.
Generally, it is necessary to change automatic transmission
fluid only if your vehicle is driven under one of the Special
Operating Conditions listed in your ºOwner's Manual
Supplement/Scheduled Maintenanceº. When changing the
automatic transmission fluid, use only ºToyota Genuine ATF
Type T±IVº ( ATF JWS3309 or NWS6500) to aid in assuring
optimum transmission performance.NOTICE
Using automatic transmission fluid other than ºToyota Genuine ATF Type T±IVº may cause deterioration inshift quality, locking up of your transmissionaccompanied by vibration, and ultimately damage theautomatic transmission of your vehicle.
2003 IS300 from Aug. '02 Prod. (OM53439U)