’06 4Runner_U (L/O 0508)
415
CAUTION
When the engine is running, keep
hands, clothing, and tools away
from the moving fan and engine
drive belts. (Removing rings,
watches, and ties is advisable.)
Right after driving, the engine
compartment—the engine, radiator,
exhaust manifold, power steering
fluid reservoir and spark plug
boots, etc.—will be hot. So be care-
ful not to touch them. Oil, fluids
and spark plugs may also be hot.
If the engine is hot, do not remove
the radiator cap or loosen the drain
plugs to prevent burning yourself.
Do not leave anything that may
burn easily, such as paper or rags,
in the engine compartment.
Do not smoke, cause sparks or al-
low open flames around fuel or the
battery. Their fumes are flammable.
Do not get under your vehicle with
just the body jack supporting it. Al-
ways use automotive jack stands or
other solid supports.
Use eye protection whenever you
work on or under your vehicle
where you may be exposed to flying
or falling material, fluid spray, etc.
Used engine oil contains potentially
harmful contaminants which may
cause skin disorders such as in-
flammation or skin cancer, so care
should be taken to avoid prolonged
and repeated contact with it. To re-
move used engine oil from your
skin, wash thoroughly with soap
and water.
Do not leave used oil within the
reach of children.
Dispose of used oil and filter only
in a safe and acceptable manner.
Do not dispose of used oil and fil-
ter in household trash, in sewers or
onto the ground. Call your dealer or
a service station for information
concerning recycling or disposal.
Be extremely cautious when work-
ing on the battery. It contains poi-
sonous and corrosive sulfuric acid.
NOTICE
Remember that battery and ignition
cables carry high currents or volt-
ages. Be careful of accidentally
causing a short circuit.
Add only “Toyota Super Long Life
Coolant” or similar high quality eth-
ylene glycol based non silicate,
non amine, non nitrite, and non bo-
rate coolant with long life hybrid
organic acid technology to fill the
radiator. “Toyota Super Long Life
Coolant” is a mixture of 50% cool-
ant and 50% deionized water (for
the U.S.A.) or 55% coolant and 45%
deionized water (for Canada).
If you spill some of the coolant, be
sure to wash it off with water to
prevent it from damaging the parts
or paint.
Do not allow dirt or anything else
to fall through the spark plug holes.
Do not pry the outer electrode of a
spark plug against the center elec-
trode.
’06 4Runner_U (L/O 0508)
447
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:
Unleaded gasoline, Octane Rating 87
(Research Octane Number 91) or higher.
For improved vehicle performance, use
premium unleaded gasoline with an Oc-
tane Rating of 91 (Research Octane
Number 96) or higher.
Fuel tank capacity, L (gal., Imp. gal.): 87 (23.0, 19.1) 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 SK20R11
NGK IFR6A11
Spark plug gap, mm (in.): 1.1 (0.043)
ENGINE LUBRICATION
Oil capacity (drain and refill), L (qt., Imp.
qt.): 4.0 L V6 (1GR −FE) engine
With filter 5.2 (5.5, 4.6)
Without filter 4.9 (5.2, 4.3)
4.7 L V8 (2UZ −FE) engine
With filter 6.2 (6.5, 5.5)
Without filter 5.7 (6.0, 5.0)
Engine FuelService specifications
