2012 Lexus GS350 Owner's Manual

8448-1. Specifications
GS350/250_EE (OM30C36E)
Engine oil selection (GS350)
“Toyota Genuine Motor Oil” is used in your Lexus vehicle.
Lexus recommends the use of approved “Toyota Genuine Motor
Oil”. Another motor oil of matching quality can also be used.
Oil grade:
0W-20, 5W-20, 5W-30 and 10W-30:
API grade SL “Energy-Conserving”, SM “Energy-Conserving”,
SN “Resource-Conserving” or ILSAC multigrade engine oil
15W-40 and 20W-50:
API grade SL, SM or SN multigrade engine oil

845
8 8-1. Specifications
Vehicle specifications
GS350/250_EE (OM30C36E)Recommended viscosity (SAE):
SAE 0W-20 is filled into your
Lexus vehicle at manufactur-
ing, and the best choice for
good fuel economy and good
starting in cold weather.
If SAE 0W-20 oil is not avail-
able, SAE 5W-30 oil may be
used. However, it should be
replaced with SAE 0W-20 at
the next oil change.
If you use SAE 10W-30 or a
higher viscosity engine oil in
extremely low temperatures,
the engine may become diffi-
cult to start, so SAE 5W-30 or
lower viscosity engine oil is
recommended.
Temperature range anticipated
before next oil change.Preferred

8468-1. Specifications
GS350/250_EE (OM30C36E)Oil viscosity (0W-20 is explained here as an example):
• The 0W in 0W-20 indicates the characteristic of the oil which
allows cold startability. Oils with a lower value before the W
allow for easier starting of the engine in cold weather.
• The 20 in 0W-20 indicates the viscosity characteristic of the
oil when the oil is at high temperature. An oil with a higher
viscosity (one with a higher value) may be better suited if the
vehicle is operated at high speeds, or under extreme load con-
ditions.
How to read oil container labels:
Either or both API registered marks are added to some oil con-
tainers to help you select the oil you should use.
API Service Symbol
Top portion: The oil quality des-
ignation by API (American
Petroleum Institute) (SN)
Center portion: The SAE vis-
cosity grade (SAE 0W-20)
Lower portion: “Resource-Con-
serving” means that the oil has
fuel saving and environmental
protection capabilities.
ILSAC Certification Mark
The ILSAC (International
Lubricant Standardization and
Approval Committee) Certifica-
tion Mark is displayed on the
front of the container.
1
2

847
8 8-1. Specifications
Vehicle specifications
GS350/250_EE (OM30C36E)
Cooling system
GS250
GS350Left-hand
drive vehiclesRight-hand
drive vehicles
Capacity
10.9 L (11.5
qt., 9.6
Imp.qt.)11.0 L (11.6
qt., 9.7
Imp.qt.)9.7 L (10.3 qt.,
8.5 Imp.qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based
non-silicate, non-amine, non-nitrite, and
non-borate coolant with long-life hybrid
organic acid technology
Do not use plain water alone.
Ignition system
Spark plug
MakeDENSO FK20HBR11
Gap1.1 mm (0.043 in.)
NOTICE
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

8488-1. Specifications
GS350/250_EE (OM30C36E)
*: The fluid capacity is the quantity of reference.
If replacement is necessary, contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
Electrical system
Battery
Open voltage at 20 C
(68 F):
Specific gravity read-
ing at 20C (68F):12.6 12.8 V Fully charged
12.2 12.4 V Half charged
11.8 12.0 V Discharged
(Voltage is checked 20 minutes after the engine
and all lights are turned off.)
1.250  1.290 Fully charged
1.160  1.200 Half charged
1.060  1.100 Discharged
Charging rates
Quick charge
Slow charge15 A max.
5 A max.
Automatic transmission
Fluid capacity*GS2507.5 L (7.9 qt., 6.6 Imp.qt.)
GS35010.0 L (10.6 qt., 8.8 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
Automatic transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause
deterioration in shift quality, locking up of your transmission accompanied
by vibration, and ultimately damage the transmission of your vehicle.

849
8 8-1. Specifications
Vehicle specifications
GS350/250_EE (OM30C36E)
Your Lexus vehicle is filled with “Toyota Genuine Differential Oil” at the
factory.
Use Lexus approved “Toyota Genuine Differential Gear Oil” or an equiva-
lent of matching quality to satisfy the above specification. Please contact any
authorized Lexus dealer or repairer, or another duly qualified and equipped
professional for further details.
*: Minimum pedal clearance when depressed with a force of 500 N (51.0
kgf, 112.4 lbf) while the engine is operating.
Front differential (AWD models)
Oil capacity 0.70 L (0.74 qt., 0.62 Imp.qt.)
Oil type and viscosity
Hypoid gear oil API GL-5
Above -18C (0F): SAE90
Below -18C (0F): SAE80W or SAE80W-90
Rear differential
Oil capacityGS2501.15 L (1.22 qt., 1.01 Imp.qt.)
GS3501.35 L (1.43 qt., 1.19 Imp.qt.)
Oil type and viscosity
Toyota Genuine Differential gear oil
LT
75W-85 GL-5 or equivalent
Brakes
Pedal
clearance
*
2WD115 mm (4.5 in.) Min.
AW D126 mm (5.0 in.) Min.
Pedal free play1.0 — 2.0 mm (0.04 — 0.08 in.)
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3
Steering
Free playLess than 30 mm (1.2 in.)

8508-1. Specifications
GS350/250_EE (OM30C36E)
Type A
*: 5 passengers and full loaded
Type B
Tires and wheels
Tire size225/50R17 94W
Tire inflation
pressure
(Recommended
cold tire inflation
pressure)
Vehicle speed
Front wheel
kPa (kgf/cm2
or bar, psi)
Rear wheel
kPa (kgf/cm2
or bar, psi)
More than 210 km/
h
(132 mph)270 (2.7, 39)*
250 (2.5, 36)
290 (2.9, 42)*
250 (2.5, 36)
From 160 km/h
(100
mph) to 210 km/h
(132 mph)
230 (2.3, 33)
240 (2.4, 35)*
230 (2.3, 33)
160 km/h
(100 mph)
or less
230 (2.3, 33)
Wheel size17  7 1/2J
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)
Tire size235/45R18 94Y
Tire inflation
pressure
(Recommended
cold tire inflation
pressure)
Vehicle speed
Front wheel
kPa (kgf/cm2
or bar, psi)
Rear wheel
kPa (kgf/cm2
or bar, psi)
More than 210 km/
h
(132 mph)
230 (2.3, 33)
250 (2.5, 36)*
230 (2.3, 33)
From 160 km/h
(100
mph) to 210 km/h
(132 mph)
230 (2.3, 33)
160 km/h (100
mph)
or less

851
8 8-1. Specifications
Vehicle specifications
GS350/250_EE (OM30C36E)
*: 5 passengers and full loaded
Wheel size18  8J
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)