2008 TOYOTA TUNDRA octane

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
OCTANE RATING
Select Octane Rating 87 (Research
Octane Number 91) or higher.
Use of unleaded gasoline with an Octane
Rating lower than 87 may result in engine
knocking. Persistent knocking can 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
Toyota dealer.
However, occasionally, you may notice
light knocking for a short time while accel-
erating or driving up hills. This is normal
and there is no need for concern. GASOLINE CONTAINING DETERGENT
ADDITIVES
Toyota recommends the use of gasoline
that contains detergent additives to
avoid buildup 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
WorldWide Fuel Charter (WWFC) that
is expected to be applied world wide.
The WWFC consists of four categories
that depend on required emission lev-
els. In the U.S., category 3 or 4 has
been adopted. The WWFC improves air
quality by providing for better emis-
sions in vehicle fleets, and customer
satisfaction through better vehicle per-
formance.CLEANER BURNING GASOLINE
Cleaner burning gasoline, including re-
formulated gasoline that contains oxy-
genates such as ethanol or MTBE is
available in many areas.
Toyota recommends the use of cleaner
burning gasoline and appropriately blended
reformulated gasoline. These types of gas-
oline provide excellent vehicle perfor-
mance, reduce vehicle emissions, and im-
prove air quality.
OXYGENATES IN GASOLINE
Toyota 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
Toyota, be sure that it has an octane
rating no lower than 87.
Toyota does not recommend the use of
gasoline containing methanol.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
GASOLINE CONTAINING MMT
Some gasoline contain an octane en-
hancing additive called MMT (Methylcy-
clopentadienyl Manganese Tricarbonyl).
Toyota does not recommend the use of
gasoline that contains MMT. If fuel con-
taining MMT is used, your emission con-
trol system may be adversely affected.
The Malfunction Indicator Lamp on the in-
strument cluster may come on. If this hap-
pens, contact your Toyota dealer for ser-
vice.
GASOLINE QUALITY
In a very few cases, you may experience
driveability problems caused by the partic-
ular 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
Toyota dealer.NOTICE
Do not use gasohol other than
stated above. It will cause fuel sys-
tem damage or vehicle performance
problems.
 If driveab ility problems occur (poor
hot starting, vaporizing, engine
knock, etc.), discontinue the use.
 Take care not to spill gasohol dur-
ing refueling. Gasohol may cause
paint damage.
FUEL TANK CAPACITY
100 L (26.4 gal., 22.0 Imp. gal.)
Fuel pump shut off system
The fuel pump shut off system stops sup-
plying 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 engine
switch to “ACC” or “LOCK” once and start
it.
CAUTION
Inspect the ground under the vehicle
before restarting the engine. If you
find that fuel has leaked onto the
ground, the fuel system has been
damaged and is in need of repair. In
this case, do not restart the engine.

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
If you plan to drive your Toyota in
another country...
First, comply with the vehicle registration
laws.
Second, confirm the availability of the cor-
rect fuel (unleaded and minimum octane
number). The threeway catalytic converter is an
emission control device installed in the
exhaust system.
The purpose is to reduce pollutants in the
exhaust gas.
CAUTION
Keep people and combustible mate-
rials away from the exhaust pipe
while the engine is running. The
exhaust gas is very hot.
Do not idle or park your vehicle
over anything that might burn easi-
ly such as grass, leaves, paper or
rags.
NOTICE
A large amount of unburned gases
flowing into the threeway catalytic
converter may cause it to overheat
and create a fire hazard. To prevent
this and other damage, observe the
following precautions:

Use only unleaded gasoline.
 Do not drive with an extremely low
fuel level; running out of fuel could
cause the engine to misfire, creat-
ing an excessive load on the three
way catalytic converter.
 Do not allow the engine to run at
idle speed for more than 20 minu-
tes.
 Avoid racing the engine.
 Do not pushstart or pullstart your
vehicle.
 Do not turn off the engine switch
while the vehicle is moving.
Operation in foreign countries Threeway catalytic converters

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2008 TUNDRA from Apr. ’08 Prod. (OM 34477U)
Model:
4.0 L V6 (1GR −FE), 4.7 L V8 (2UZ −FE)
and 5.7 L V8 (3UR −FE) engine
Type: 4.0 L V6 (1GR −FE) engine
6 cylinder V type, 4 cycle, gasoline
4.7 L V8 (2UZ −FE) engine
8 cylinder V type, 4 cycle, gasoline
5.7 L V8 (3UR −FE) engine
8 cylinder V type, 4 cycle, gasoline
Bore and stroke, mm (in.): 4.0 L V6 (1GR −FE) engine
94.0 95.0 (3.70 3.74)
4.7 L V8 (2UZ −FE) engine
94.0 84.0 (3.70 3.31)
5.7 L V8 (3UR −FE) engine
94.0 102.0 (3.70 4.02)
Displacement, cm
3 (cu. in.):
4.0 L V6 (1GR −FE) engine
3956 (241.4)
4.7 L V8 (2UZ −FE) engine
4664 (284.5)
5.7 L V8 (3UR −FE) engine
5663 (345.4) Fuel type:
Unleaded gasoline, Octane Rating 87
(Research Octane Number 91) or higher.
Fuel tank capacity, L (gal., Imp. gal.): 100 (26.4, 22.0) ENGINE
Valve clearance (engine cold), mm (in.):
4.0 L V6 (1GR −FE) engine
Intake 0.15—0.25 (0.006—0.010)
Exhaust 0.29—0.39 (0.011—0.015)
4.7 L V8 (2UZ −FE) engine
Intake 0.15—0.25 (0.006—0.010)
Exhaust 0.25—0.35 (0.010—0.014)
5.7 L V8 (3UR −FE) engine
Automatic adjustment
Spark plug type: 4.0 L V6 (1GR −FE) engine
DENSO K20HR −U11
NGK LFR6C11
4.7 L V8 (2UZ −FE) engine
DENSO SK20R11
NGK IFR6A11
5.7 L V8 (3UR −FE) engine
DENSO SK20HR11
Spark plug gap, mm (in.): 1.1 (0.043)
Engine FuelService specifications

Publication No. OM34477U
Part No. 01999-34477
Printed in Japan 01−0802 −00
(U)
Quick index
 If a service reminder indicator or warning buzzer comes on 182 . . . . . . . .
 If your vehicle will not start 498 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. .
 If your engine stalls while driving 502 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 If you cannot increase engine speed 502 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 If your vehicle overheats 502 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . .
 If you have a flat tire 503 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . .
 If your vehicle needs to be towed 517 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 Tips for driving during break −in period 443 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 How to start the engine 474 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . .
 General maintenance 535 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . .
Gas station information
Fuel type:
UNLEADED gasoline, Octane Rating 87 (Research Octane Number 91) or
higher
See page 443 for detailed information.
Fuel tank capacity: 100 L (26.4 gal., 22.0 lmp. gal.)
Engine oil:
ILSAC multigrade engine oil is recommended.
See page 549 for detailed information.
Tire information: See pages 553 through 562.
Tire inflation pressure: See page 594.
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2008 TUNDRA from Apr. ’08 Prod. (OM34477U)