2005 TOYOTA TUNDRA octane

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2005 TUNDRA from Aug. ’04 Prod. (OM34427U)
OCTANE RATING
1GR−FE engine: Select Octane Rating
87 (Research Octane Number 91) or
higher. For improved vehicle
performance, the use of premium
unleaded gasoline with an Octane
Rating of 91 (Research Octane Number
96) or higher is recommended.
2UZ− FE engine: Select Octane Rating 87
(Research Octane Number 91) or higher.
Use of unleaded gasoline with an octane
rating or research octane number lower
than stated above will cause persistent
heavy knocking. If it is 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
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 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 four categories
that depend on required emission lev-
els. In the U.S., category 4 has been
adopted. The WWFC improves air quali-
ty by providing for better emissions in
vehicle fleets, and customer satisfaction
through better vehicle performance. 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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2005 TUNDRA from Aug. ’04 Prod. (OM34427U)
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.) 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 ignition
switch to “ACC” or “LOCK” 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 has
been damaged and it is in need of
repair. In this case, do not restart the
engine.
Fuel pump shut off system

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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).
1GR −FE engine
2UZ −FE engine
The three −way 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.
Operation in foreign countries Three −way catalytic converters

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2005 TUNDRA from Aug. ’04 Prod. (OM34427U)
Model:
1GR −FE and 2UZ −FE
Type: 1GR −FE engine
6 cylinder V type, 4 cycle, gasoline
2UZ− FE engine
8 cylinder V type, 4 cycle, gasoline
Bore and stroke, mm (in.): 1GR −FE engine
94.0 95.0 (3.70 3.74)
2UZ− FE engine
94.0 84.0 (3.70 3.31)
Displacement, cm
3 (cu. in.):
1GR −FE engine 3956 (241.4)
2UZ− FE engine 4664 (284.6) Fuel type:
1GR −FE engine
Unleaded gasoline, Octane Rating 87
(Research Octane Number 91) or
higher. For improved vehicle perfor-
mance, the use of premium unleaded
gasoline with an Octane Rating of 91
(Research Octane Number 96) or
higher is recommended.
2UZ− FE engine
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.):
1GR −FE engine
Intake 0.15—0.25 (0.006—0.010)
Exhaust 0.29—0.39 (0.011—0.015)
2UZ− FE engine
Intake 0.15—0.25 (0.006—0.010)
Exhaust 0.25—0.35 (0.010—0.014)
Spark plug type: 1GR −FE engine
DENSO K20HR−U11
NGK LFR6C11
2UZ− FE engine
DENSO KS20R11
NGK IFR6A11
Spark plug gap, mm (in.): 1.1 (0.043)
Engine FuelService specifications

’05 TUNDRA_U (L/O 0408)
2005 TUNDRA from Aug. ’04 Prod. (OM34427U)
Publication No. OM34427U
Part No. 01999-34427
Printed in Japan 01-0408-00
(U)
Quick index
If a service reminder indicator or warning buzzer comes on 170 . . . . . . . . . . .
 If your vehicle will not start 392 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . .
 If your engine stalls while driving 396 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 If your vehicle overheats 396 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . .
 If you have a flat tire 397 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . .
 If your vehicle needs to be towed 410 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 Tips for driving during break −in period 341 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 How to start the engine 372 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . .
 General maintenance 425 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . .
 Complete index 491 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . .
Gas station information
Fuel type:
1GR −FE engine: UNLEADED gasoline, Octane Rating 87 (Research Octane
Number 91) or higher
For improved vehicle performance, the use of premium unleaded gasoline
with an Octane Rating of 91 (Research Octane Number 96) or higher is
recommended.
2UZ −FE engine: UNLEADED gasoline, Octane Rating 87 (Research Octane
Number 91) or higher
See page 341 for detailed information.
Fuel tank capacity: 100 L (26.4 gal., 22.0 lmp. gal.)
Engine oil:
API grade SL “Energy −Conserving” or ILSAC multigrade engine oil is
recommended.
See page 439 for detailed information.
Tire information: See pages 444 through 452.
Tire inflation pressure: See page 478.
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