2006 TOYOTA TUNDRA fuel type

’06 TUNDRA_U (L/O 0508)
349
2006 TUNDRA from Oct. ’06 Prod. (OM 34458U)
INFORMATION BEFORE DRIVING YOUR
TOYOTA
Information before driving your Toyota
Off−road vehicle precautions 350
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Break −in period 351
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . .
Fuel 351
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . . . . . . . .
Fuel pump shut off system 353
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation in foreign countries 354
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Three −way catalytic converters 354
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine exhaust cautions 355
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
Facts about engine oil consumption 356
. . . . . . . . . . . . . . . . . . . . . . . . . .
Iridium −tipped spark plugs 357
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake system 358
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . .
Brake pad wear limit indicators 364
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear step bumper 364
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . .
StepSide bed 365
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . .
Limited −slip differential 365
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. .
Your Toyota’s identification 365
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theft prevention labels 367
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. .
Suspension and chassis 367
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
Tire information 368
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . .
Vehicle load limits 376
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . .
Cargo and luggage 377
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . .
Types of tires 379
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . .
SECTION 2

’06 TUNDRA_U (L/O 0508)
351
2006 TUNDRA from Oct. ’06 Prod. (OM 34458U)
When driving offroad or in rugged
terrain, do not drive at excessive
speeds, jump, make sharp turns,
strike objects, etc. This may cause
loss of control or vehicle rollover
causing death or serious injury. You
are also risking expensive damage
to your vehicle’s suspension and
chassis.
Do not drive horizontally across
steep slopes. Driving straight up or
straight down is preferred. Your ve-
hicle (or any similar offroad ve-
hicle) can tip over sideways much
more easily than forward or back-
ward.
Drive gently and avoid high speeds.
Your vehicle does not need an elaborate
break−in. But following a few simple tips
for the first 1600 km (1000 miles) can add
to the future economy and long life of
your vehicle:
Avoid full throttle acceleration when
starting and driving.
Avoid racing the engine.
Try to avoid hard stops during the first
300 km (200 miles).
Do not drive slowly with the manual
transmission in a high gear.
Do not drive for a long time at any
single speed, either fast or slow.
Do not tow a trailer during the first 800
km (500 miles). FUEL TYPE
Your new vehicle must use only un-
leaded gasoline.
To help prevent gas station mix
−ups, your
Toyota has a smaller fuel tank opening.
The special nozzle on pumps with un-
leaded fuel will fit it, but the larger stan-
dard nozzle on pumps with leaded gas will
not.
At a minimum, the gasoline you use
should meet 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 ef-
fectiveness and the emission control
system to function improperly. Also,
this can increase maintenance costs.
Breakin period Fuel

’06 TUNDRA_U (L/O 0508)
352
2006 TUNDRA from Oct. ’06 Prod. (OM 34458U)
OCTANE RATING
4.0 L V6 (1GRFE) engine: Select
Octane Rating 87 (Research Octane
Number 91) or higher. For improved
vehicle performance, use premium
unleaded gasoline with an Octane
Rating of 91 (Research Octane Number
96) or higher.
4.7 L V8 (2UZFE) 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 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.

’06 TUNDRA_U (L/O 0508)
356
2006 TUNDRA from Oct. ’06 Prod. (OM 34458U)
To allow proper operation of your
vehicle’s ventilation system, keep
the inlet grilles in front of the wind-
shield clear of snow, leaves, or oth-
er obstructions.
If you smell exhaust fumes in the
vehicle, open the side windows to
ensure plenty of fresh air enters the
vehicle. If you can smell exhaust
fumes even though there are no
other vehicles in the surrounding
area, have your vehicle checked by
your Toyota dealer. Continued in-
halation of exhaust fumes can lead
to death by gas poisoning.
Toyota does not recommend occu-
pying the rear cargo area when it
is fitted with a slidein camper,
camper shell or other type cover
while the engine is running. This
caution applies to both driving and
stopped or parked situations with
the engine running. Particular care
should be taken to prevent exhaust
gases from entering camper bodies,
trailers or other enclosures on or
around your vehicle. If exhaust
fumes are detected, open all win-
dows and thoroughly ventilate the
area.FUNCTIONS OF ENGINE OIL
Engine oil has the primary functions of
lubricating and cooling the inside of the
engine, and plays a major role in main-
taining the engine in proper working order.
ENGINE OIL CONSUMPTION
It is normal that an engine should con-
sume some engine oil during normal
engine operation. The causes of oil
consumption in a normal engine are as
follows.
Oil is used to lubricate pistons, piston
rings and cylinders. A thin film of oil
is left on the cylinder wall when a pis-
ton moves downwards in the cylinder.
High negative pressure generated when
the vehicle is decelerating sucks some
of this oil into the combustion chamber.
This oil as well as some part of the oil
film left on the cylinder wall is burned
by the high temperature combustion
gases during the combustion process.
Oil is also used to lubricate the stems
of the intake valves. Some of this oil
is sucked into the combustion chamber
together with the intake air and is
burned along with the fuel. High tem-
perature exhaust gases also burn the
oil used to lubricate the exhaust valve
stems.
Facts about engine oil
consumption

’06 TUNDRA_U (L/O 0508)
438
2006 TUNDRA from Oct. ’06 Prod. (OM 34458U)
Power steering fluid level
Check the level through the reservoir. The
level should be in the “HOT” or “COLD”
range depending on the fluid temperature.
See Section 7−2 for additional information.
Exhaust system
If you notice any change in the sound of
the exhaust or smell exhaust fumes, have
the cause located and corrected immedi-
ately. (See “Engine exhaust cautions” in
Section 2.)
INSIDE THE VEHICLE
Items listed below should be checked
regularly, e.g. while performing periodic
services, cleaning the vehicle, etc.
Lights
Make sure the headlights, stop lights, tail
lights, turn signal lights, and other lights
are all working. Check headlight aim.
Service reminder indicators and warning
buzzers
Check that all service reminder indicators
and warning buzzers function properly.
Steering wheel
Be alert for changes in steering condition,
such as hard steering or strange noise. Seats
Check that all seat controls such as seat
adjusters, seatback recliner, etc. operate
smoothly and that all latches lock securely
in any position. Check that the head re-
straints move up and down smoothly and
that the locks hold securely in any latched
position. For folding
−down seatback, check
that the latches lock securely.
Seat belts
Check that the seat belt system such as
buckles, retractors and anchors operate
properly and smoothly. Make sure the belt
webbing is not cut, frayed, worn or dam-
aged.
Accelerator pedal
Check the pedal for smooth operation and
uneven pedal effort or catching.
Clutch pedal
Check the pedal for smooth operation.
Brake pedal
Check the pedal for smooth operation and
that the pedal has the proper clearance.
Check the brake booster function.
Brakes
In a safe place, check that the brakes do
not pull to one side when applied. Parking brake (pedal type)
Check that the pedal has the proper travel
and that, on a safe incline, your vehicle
is held securely with only the parking
brake applied.
Parking brake (lever type)
Check that the lever has the proper travel
and that, on a safe incline, your vehicle
is held securely with only the parking
brake applied.
Automatic transmission “Park” mecha-
nism
On a safe incline, check that your vehicle
is held securely with the selector lever in
“P” position and all brakes released.
OUTSIDE THE VEHICLE
Items listed below should be performed
from time to time, unless otherwise
specified.
Fluid leaks
Check underneath for leaking fuel, oil, wa-
ter or other fluid after the vehicle has
been parked for a while. If you smell fuel
fumes or notice any leak, have the cause
found and corrected immediately.

’06 TUNDRA_U (L/O 0508)
487
2006 TUNDRA from Oct. ’06 Prod. (OM 34458U)
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 (284.5) Fuel type:
4.0 L V6 (1GR −FE) engine
Unleaded gasoline, Octane Rating 87
(Research Octane Number 91) or
higher. For improved vehicle perfor-
mance, use premium unleaded gaso-
line with an Octane Rating of 91 (Re-
search Octane Number 96) or higher.
4.7 L V8 (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.):
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)
Spark plug type: 4.0 L V6 (1GR −FE) engine
DENSO K20HR −U11
NGK LFR6C11
4.7 L V8 (2UZ −FE) engine
DENSO KS20R11
NGK IFR6A11
Spark plug gap, mm (in.): 1.1 (0.043)
Engine FuelService specifications

’06 TUNDRA_U (L/O 0508)
493
2006 TUNDRA from Oct. ’06 Prod. (OM 34458U)
Engine compartment
Instrument panel
Fuses (type A)
1. MIR HTR 15 A: Outside rear view mir-
ror heaters
2. FOG 15 A: Front fog lights
3. TOW BRK 30 A (with towing pack- age): Trailer brake controller
4. SUB BATT 30 A (with towing pack- age): Trailer sub battery
5. TOW TAIL 30 A: Trailer lights (tail
lights)
6. SPARE 30 A: Spare fuse
7. SPARE 15 A: Spare fuse
8. SPARE 20 A: Spare fuse 9. SPARE 10 A:
Spare fuse
10. PWR OUTLET 1 15 A: Power outlets
11. ECUB 5 A: Vehicle stability control
system, front pass enger occupant clas-
sification system
12. HLP RH 10 A: Right−hand headlight
(high beam)
13. PWR OUTLET 2 15 A: Power outlet
14. DOME 10 A: Interior light, personal
lights, vanity light, ignition switch light,
step light, door courtesy lights, open
door warning light
15. HLP LH 10 A : Left−hand headlight
(high beam)
16. EFI NO.2 10 A: Multiport fuel injection
system/s equential multiport fuel injec-
tion system, leak detection pump, emis-
sion control system
17. RADIO 25 A: Audio system
18. HEAD RL 10 A (with daytime running light system): Right−hand headlight
(low beam)
19. A/C 10 A: Air conditioning system
20. A/F 20 A: A/F sensor
21. HEAD LL 10 A (with daytime running light system): Left−hand headlight (low
beam)
Fuses (standard and access
cab models)

’06 TUNDRA_U (L/O 0508)
494
2006 TUNDRA from Oct. ’06 Prod. (OM 34458U)
22. ALTS 7.5 A: Charging system
23. ETCS 10 A: Multiport fuel injection
system/s equential multiport fuel injec-
tion system, electronic throttle control
system
24. HAZ 15 A: Emergency flashers, turn
signal lights, towing converter
25. EFI NO.1 20 A: Multiport fuel injection
system/s equential multiport fuel injec-
tion system, fuel pump, “EFI NO.2”
fuse
26. AM2 30 A: Ignition system, starting
system, “IGN” and “STA” fuses
27. TOWING 30 A: Towing converter
28. WIP 20 A: Windshield wipers and
washer
29. TURN 5 A: Turn signal lights
30. ECU IG 5 A: Anti−lock brake system,
vehicle stability control system, multi-
plex communication system, tire pres-
sure warning system
31. 4WD 20 A: Four−wheel drive control
system, A.D.D. control system
32. ACC 15 A: Cigarette lighter, audio sys-
tem, power rear view mirrors, “PWR
OUTLET 1” and “PWR OUTLET 2”
fuses 33. GAUGE 10 A:
Gauges and meters,
back −up lights, starting system, air
conditioning system, auto anti −glare in-
side rear view mirror, outside rear view
mirror heaters
34. IGN 5 A (without daytime running light system) or 7.5 A (with daytime
running light system): SRS airbag
system, multiport fuel injection system/
sequential multiport fuel injection sys-
tem, discharge warning light, ignition
system, vehicle stability control system,
front passenger occupant classification
system, engine immobilizer system
35. CARGO LP 5 A: Cargo lamp
36. TAIL 15 A: Tail lights, turn signal
lights, license plate lights, instrument
panel lights, parking lights, glove box
light
37. OBD 7.5 A: On−board diagnosis sys-
tem
38. HORN 10 A: Horns
39. STA 5 A: Multiport fuel injection sys-
tem/sequential multiport fuel injection
system, g auges and meters
40. STOP 15 A: Stoplights, high mounted
stoplight, anti −lock brake system, ve-
hicle stability control system, towing
converter Fuses (type B)
41. AM1 40 A: Starting system, “ACC”,
“WIP”, “4WD”, “ECU −IG”, “GAUGE” and
“TURN” fuses
42. HTR 50 A: Air conditioning system,
“A/C” fuse
43. J/B 50 A: “POWER”, “CARGO LP”,
“TAIL”, “OBD”, “HORN” and “STOP”
fuses
44. ABS 2 50 A: Anti−lo
ck brake system,
vehicle stability control system
45. ABS 3 30 A: Anti−lock brake system,
vehicle stability control system
46. ST3 30 A: Starting system, “STA” fuse
47. POWER 30 A: Power door lock sys-
tem, power windows, power back win-
dow, power seat
Fuse (type C)
48. FL ALT 120 A (without towing pack- age) or 140 A (with towing package):
“AM1”, “HTR”, “J/B”, “MIR HTR”,
“FOG”, “TOW BRK”, “SUB BATT”,
“TOW TAIL”, “PWR OUTLET 1” and
“PWR OUTLET 2” fuses
49. A/PUMP 60 A: Multiport fuel injection
system/s equential multiport fuel injec-
tion system