Lexus GX470 2004 Audio /

ENGINE
562

1Add oil2O.K.3Too full
4. Pull the dipstick out and look at the oil level while holding a
rag under the end. If it is between the low level mark (4) and
the full level mark (5), it is O.K.
NOTICE
Be careful not to drop engine oil on the vehicle
components.

ENGINE
563
If the oil level is below or only slightly above the low line,
add engine oil of the same type as already in the engine.
Remove the oil filler cap and add engine oil a little at a time,
checking the dipstick. We recommend that you use a funnel
when adding oil. The approximate quantity of oil needed to
raise the level between low line and full line on the dipstick is
indicated below for reference.
When the level reaches within the correct range, return the filler
cap and turn the cap clockwise until you hear a click.
Oil quantity. L (qt., lmp. qt.) 1.5 (1.6, 1.3)

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564
NOTICE
Be careful not to spill 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
565
Engine oil selection
Toyota Genuine Motor Oilº is used in your Lexus vehicle. Use
Lexus approved Toyota Genuine Motor Oilº or equivalent to
satisfy the following grade and viscosity.
Oil grade: API grade SL Energy-Conservingº or ILSAC
multigrade engine oil.
Recommended viscosity: SAE 5W-30
62Z002
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 may be
used. However, it should be replaced with SAE 5W-30 at
the next oil change.
Oil identification marks

API Service Symbol
ILSAC Certification Mark
Either or both API registered marks are added to some oil
containers to help you select the oil you should use.
 The API Service Symbol is located anywhere on the outside
of the container.
The top portion of the label shows the oil quality by API
(American Petroleum Institute) designation such as SL.
The center portion of the label shows the SAE viscosity
grade such as SAE 5W-30. Energy-Conservingº, shown
in the lower portion, indicates that the oil has fuel-saving
capabilities.
 The ILSAC (International Lubricant Standardization and
Approval Committee) Certification Mark is displayed on the
front of the container.

ENGINE
566To ensure excellent lubrication performance for your engine,
Toyota Genuine Motor Oilº is available, which has been
specifically tested and approved for all Lexus engines.
Please contact your Lexus dealer for further details about
Toyota Genuine Motor Oilº.
CHECKING THE ENGINE COOLANT
LEVEL

1Reservoir cap2Fº (upper) line
3Lº (lower) line
Look at the see-through coolant reservoir when the
engine is cold. The coolant level is satisfactory if it is
between the Fº and Lº lines on the reservoir. If the level
is low, add the coolant. (For the coolant type, see Coolant
type selectionº described below.)
The coolant level in the reservoir will vary with engine
temperature. However, if the level is on or below the Lº line,
add coolant. Bring the level up to the Fº line.

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567
If the coolant level drops within a short time after replenishing,
there
may be a leak in the system. Visually check the radiator,
hoses, engine coolant filler cap, radiator cap and drain cock
and water pump.
If you can find no leak, have your Lexus dealer test the radiator
cap pressure and check for leaks in the cooling system.
CAUTION
To prevent burning yourself, do not remove the radiator
cap when the engine is hot.
Coolant type selection
Use of improper coolants may damage your engine cooling
system.
Only use Toyota Super Long Life Coolantº or similar high
quality ethylene glycol based non- silicate, non- amine,
non- nitrite, and non- borate coolant with long- life hybrid
organic acid t echnology. (Coolant with long-life hybrid organic
acid technology is a combination of low phosphates and
organic acids.) For the U.S.A. Ð Toyota Super Long Life Coolantº is a mixture
of 50% coolant and 50% deionized water. This coolant
provides protection down to about -35C (-31F).
For Canada Ð Toyota Super Long Life Coolantº is a mixture
of 55% coolant and 45% deionized water. This coolant
provides protection down to about -42C (-44F).

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568
NOTICE
Do not use plain water alone.
Lexus recommends Toyota Super Long Life Coolantº, which
has been tested to ensure that it will not cause corrosion nor
result in malfunction of your engine coolant system with proper
usage. Toyota Super Long Life Coolantº is formulated with
long- life hybrid organic acid technology and has been
specifically designed to avoid engine cooling system
malfunction on Lexus vehicles.
Please contact your Lexus dealer for further details.CHECKING THE RADIATOR AND CONDENSER
If either of the above parts are extremely dirty or you are not
sure of their condition, take your vehicle to a Lexus dealer.
CAUTION
To prevent burning yourself, be careful not to touch the
radiator or condenser when the engine is hot.
NOTICE
To prevent damage to the radiator and condenser, do
not perform the work by yourself.

ENGINE
569
SPARK PLUGSYour engine is fitted with iridium-tipped spark plugs.
NOTICE
Use only iridium-tipped spark plugs and do not adjustgaps for your engine performance and smoothdrivability.

SECTION 6 ± 3
570
SERVICE PROCEDURES AND
SPECIFICATIONS
Chassis
Specifications571
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Checking brake fluid 575
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Checking power steering fluid 576
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Checking tire inflation pressure 578
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. . . . . . . . . . . . . . . . . . Tire information
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Types of tires591
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Rotating tires 592
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Checking and replacing tires 593
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Installing snow tires and chains 595
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Replacing wheels 600
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Aluminum wheel precautions 601
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Suspension and chassis 601
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CHASSIS
571
SPECIFICATIONS
Ð DIFFERENTIALOil capacity Front
Rear
1.4 L (1.5 qt., 1.2 lmp. qt.)
3.1 L (3.3 qt., 2.7 lmp. qt.)
Oil typeHypoid gear oil API GL-5
Oil viscosityAbove -18C (0F): SAE 90 or SAE 85W-90
Below -18C (0F): SAE 80W or SAE 80W-90
Ð TRANSFER
Oil capacity
1.4 L (1.5 qt., 1.2 lmp. qt.)
Oil typeHypoid gear oil API GL-5
Recommended oil viscositySAE 75W-90