2001 Lexus GS300 Engine

SECTION 6 ± 2
243
SERVICE PROCEDURES AND
SPECIFICATIONS
Engine
Specifications (GS430) 244. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications (GS300) 246. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel248 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel pump shut off system250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Facts about engine oil consumption251 . . . . . . . . . . . . . . . . . . . . . . . .
Used engine oil252 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the engine oil level253 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the engine coolant level255 . . . . . . . . . . . . . . . . . . . . . . . . . .
Spark plugs257 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

62L005±1
Temperature range anticipated before next oil change
ENGINE
244
SPECIFICATIONS (GS430)
± GENERAL
Model
Type
Bore and stroke
Displacement
Valve clearance (engine cold)
Intake
Exhaust
Drive belt tension
3UZ±FE
8 cylinder V type, 4 cycle, gasoline
91.0 X 82.5 mm (3.58 X 3.25 in.)
4293 cm
3 (261.9 cu.in.)
0.15 ± 0.25 mm (0.006 ± 0.010 in.)
0.25 ± 0.35 mm (0.010 ± 0.014 in.)
Automatic adjustment
± LUBRICATION SYSTEM
Oil capacity
Drain and refill
with filter
without filter
Oil grade
Recommended oil viscosity (SAE):
5.2 L (5.5 qt., 4.6 lmp.qt.)
4.9 L (5.2 qt., 4.3 lmp.qt.)
API SJ, ºEnergy±Conservingº multigrade engine oil or
ILSAC multigrade engine oil

ENGINE
245 ± COOLING SYSTEM
Capacity
Coolant type
9.0 L (9.5 qt., 7.9 lmp.qt.)
ºToyota Long Life Coolantº or equivalent
With ethylene±glycol type coolant for a proper corrosion
protection of aluminum components
Do not use alcohol type antifreeze or plain water alone.
± FUEL
Fuel type
Octane rating
Only UNLEADED
91 (Research octane number 96) or higher
± IGNITION SYSTEM
Spark plug ± Make DENSO
NGK
± Gap
SK20R11
IFR6A11
1.1 mm (0.043 in.)
± ELECTRICAL SYSTEM
Battery Open voltage at 20C (68F):
Charging rates
12.7V Fully charged
12.3V Half charged
11.9V Discharged
[Voltage that is checked 20 minutes after the key is removed
with all the lights turned off]
5A max.

62L005±1
Temperature range anticipated before next oil change
ENGINE
246
SPECIFICATIONS (GS300)
± GENERAL
Model
Type
Bore and stroke
Displacement
Valve clearance (engine cold)
Intake
Exhaust
Drive belt tension
2JZ±GE
6 cylinder in line, 4 cycle, gasoline
86.0 X 86.0 mm (3.39 X 3.39 in.)
2997 cm
3 (182.9 cu.in.)
0.15 ± 0.25 mm (0.006 ± 0.010 in.)
0.25 ± 0.35 mm (0.010 ± 0.014 in.)
Automatic adjustment
± LUBRICATION SYSTEM
Oil capacity
Drain and refill
with filter
without filter
Oil grade
Recommended oil viscosity (SAE):
5.4 L (5.7 qt., 4.8 lmp.qt.)
5.1 L (5.4 qt., 4.5 lmp.qt.)
API SJ, ºEnergy±Conservingº multigrade engine oil or
ILSAC multigrade engine oil

ENGINE
247 ± COOLING SYSTEM
Capacity
Coolant type
7.7 L (8.1 qt., 6.8 lmp.qt.)
ºToyota Long Life Coolantº or equivalent
With ethylene±glycol type coolant for a proper corrosion
protection of aluminum components
Do not use alcohol type antifreeze or plain water alone.
± FUEL
Fuel type
Octane rating
Only UNLEADED
91 (Research octane number 96) or higher
± IGNITION SYSTEM
Spark plug ± Make DENSO
± Gap
SK16R±P11
1.1 mm (0.043 in.)
± ELECTRICAL SYSTEM
Battery ± Open voltage at 20C (68F):
Charging rates
12.7V Fully charged
12.3V Half charged
11.9V Discharged
[Voltage that is checked 20 minutes after the key is removed
with all the lights turned off]
5A max.

ENGINE
248
FUEL
Fuel type
Your vehicle must use only unleaded gasoline.
To help prevent gas station mixups, your Lexus has a smaller
fuel tank opening. The special nozzle on pumps with unleaded
fuel will fit it, but the larger standard nozzle on pumps with
leaded gas will not.
At a minimum, the gasoline you use should meet the
specifications of ASTM D4814 in the U.S.A. and CGSB
3.5±M93 in Canada.
NOTICE
Do not use leaded gasoline. Use of leaded gasoline will
cause the three±way catalytic converter to lose its
effectiveness and the emission control system to
function improperly. Also, this can increase
maintenance costs.
Octane rating
Select premium unleaded gasoline with an Octane Rating
of 91 (Research Octane Number 96) or higher for optimum
engine performance. However, if such premium type
cannot be obtained, you may temporarily use unleaded
gasoline with an Octane Rating as low as 87 (Research
Octane Number 91).Use of unleaded fuel with an octane number or rating lower
than stated above will cause persistent heavy knocking. If
severe, this will lead to engine damage.
If your engine knocks ...
If you detect heavy knocking even when using the
recommended fuel, or if you hear steady knocking while
holding a steady speed on level roads, consult your Lexus
dealer.
However, now and then, you may notice light knocking for a
short time while accelerating or driving up hills. This is no
cause for concern.
Gasoline containing detergent additives
Lexus recommends the use of gasoline that contains
detergent additives to avoid build±up of engine deposits.
However, all gasoline sold in the U.S. contains detergent
additives to keep clean and/or clean intake systems.
Quality gasoline
Automotive manufacturers in the U.S., Europe and Japan
have developed a specification for quality fuel named
World±Wide Fuel Charter (WWFC) that is expected to be
applied world wide. The WWFC consists of three
categories that depend on required emission levels. In the
U.S., category 3 has been adopted. The WWFC improves
air quality by providing for better emissions in vehicle
fleets, and customer satisfaction through better vehicle
performance.

ENGINE
249
Cleaner burning gasoline
Cleaner burning gasoline, including reformulated
gasoline that contains oxygenates such as ethanol or
MTBE is available in many areas.
Lexus recommends the use of cleaner burning gasoline and
appropriately blended reformulated gasoline. These types of
gasoline provide excellent vehicle performance, reduce
vehicle emissions, and improve air quality.
Oxygenates in gasoline
Lexus allows the use of oxygenate blended gasoline
where the oxygenate content is up to 10% ethanol or 15%
MTBE. If you use gasohol in your Lexus, be sure that it has
an octane rating no lower than 87.
Lexus does not recommend the use of gasoline containing
methanol.
Sulfur in gasoline
If your vehicle is certified to California Emission
Regulation, the vehicle is designed to operate on
California cleaner burning gasoline (CBG) that contains
lower sulfur. If you cannot use California CBG, your
emission control system may suffer damage and turn on
the Malfunction Indicator Lamp.
If the malfunction is caused by the type of fuel used, repairs
may not be covered by your warranty.
Gasoline containing MMT
Some gasoline contain an octane enhancing additive
called MMT (Methylcyclopentadienyl Manganese
Tricarbonyl).
Lexus does not recommend the use of gasoline that contains
MMT. If fuel containing MMT is used, your emission control
system may be adversely affected. The Malfunction Indicator
Lamp on the instrument cluster may come on. If this happens,
contact your Lexus dealer for service.
Gasoline quality
In a very few cases, you may experience driveability problems
caused by the particular gasoline that you are using. If you
continue to have unacceptable driveability, try changing
gasoline brands. If this does not rectify your problem, then
consult your Lexus dealer.

ENGINE
250
NOTICE
Do not use gasohol other than stated above. It will
cause fuel system damage or vehicle performance
problems.
If drivability problems are encountered (poor hot
starting, vaporizing, engine knock, etc.), discontinue
its use.
Take care not to spill gasohol during refueling.
Gasohol may cause paint damage.
Fuel tank capacity
75 L (19.8 gal., 16.5 lmp.gal.)
FUEL PUMP SHUT OFF SYSTEM
The fuel pump shut off system stops supplying fuel to the
engine to minimize the risk of fuel leakage when the engine
stalls or an airbag inflates upon collision. To restart the engine
after the fuel pump shut off system activates, turn the ignition
switch to ªACCº or ªLOCKº once and start it.
CAUTION
Inspect the ground under the vehicle before restarting
the engine. If you find that liquid has leaked onto the
ground, it is the fuel system that has been damaged and
it is in need of repair. In this case, do not restart the
engine.