Page 175 of 197

accelerating or driving up hills. This is no
cause for concern, because you get the
greatest fuel benefit when there is light
spark knock for a short time under heavy
engine load.
ENGINE OIL AND OIL FILTER
RECOMMENDATION
Selecting the correct oil
It is essential to chose the correct quality, and
viscosity oil to ensure satisfactory engine life
and performance. Nissan recommends the
use of a low friction oil (energy conserving oil)
in order to improve fuel economy and con-
serve energy. Oils which do not have the
specified quality label should not be used as
they could cause engine damage.
Only those engine oils with the American Pe-
troleum Institute (API) CERTIFICATIONMARK on the front of the container should be
used. This type of oil supersedes the existing
API SG or SH and Energy Conserving II
categories.
If you cannot find engine oil with the CERTI-
FICATION MARK, an API SG or SH and
Energy Conserving II oil with API Service
Symbol may be used. An oil with a single
designation ªSGº or ªSHº, or in combination
with other categories (for example, ªSG/CCº or
ªSG/CDº) may also be used if one with the API
CERTIFICATION MARK cannot be found.
Mineral based or synthetic type oils may be
used in your NISSAN vehicle. These oils must
STI0077
9-4
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RECOMMENDED SAE VISCOSITY
NUMBER
ISAE 5W-30 viscosity oil is preferred for
all temperatures. SAE 10W-30 viscosity
oil may be used if the ambient tempera-
ture is above 0ÉF (þ18ÉC).I80W-90 is preferable for ambient tem-
peratures below 104ÉF (40ÉC).
Air conditioning system refrigerant
and lubricant recommendations
The air conditioning system in this NISSAN
vehicle must be charged with the refriger-
ant HFC-134a (R-134a) and the lubricant,
Nissan A/C System Oil Type S or the exact
equivalents.Use of any other refrigerant or
lubricant will cause severe damage and you
will need to replace your vehicle's entire air
conditioning system.
The new refrigerant HFC-134a (R-134a) in
your NISSAN vehicle will not harm the earth's
ozone layer. Although this refrigerant does not
affect the earth's atmosphere, certain govern-
mental regulations require the recovery and
recycling of any refrigerant during automotive
air conditioning system service. Your NISSAN
dealer has the trained technicians and equip-
ment needed to recover and recycle your air
conditioning system refrigerant.
Contact your NISSAN dealer when servicing
your air conditioning system.
TI1028-BTI1002M
9-6
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Page 178 of 197
Model VQ30DE
Type Gasoline, 4-cycle
Cylinder arrangement 6-cylinder, V-slanted at 60É
Bore x Stroke in (mm) 3.66 x 2.886 (93.0 x 73.3)
Displacement cu in (cm
3) 182.33 (2,988)
Firing order 1-2-3-4-5-6*
Idle speed rpm
See the ªEmission Control Labelº
on the underside of the hood. Ignition timing (B.T.D.C.) degree/rpm
CO percentage at idle speed [No air] %
Spark plugStandard PFR5G-11
Service option PFR4G-11, PFR6G-11
Spark plug gap in (mm) Ð
Camshaft operation Timing chain
Alternator belt size
Width x Length in (mm) 0.8409 x 43.11 (21.36 x 1,095)
The spark ignition system of this vehicle
meets all requirements of the Canadian
Interference-Causing Equipment Regula-
tions.
TI1009-A
ENGINE
9-7
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Page 187 of 197

the transmission to a lower gear and reduce
speed to reduce chances of engine over-
loading and/or overheating.
IIf the engine coolant rises to an extremely
high temperature when the air conditioning
system is on, turn off the air conditioner.
Coolant heat can be additionally vented by
opening the windows, switching the fan
control to high and setting the temperature
control to the ªHOTº position.
ITrailer towing requires more fuel than nor-
mal circumstances.
IAvoid towing a trailer for the first 500 miles
(800 km).
IHave your vehicle serviced more often than
at intervals specified in the recommended
Maintenance Schedule.
IWhen making a turn, your trailer wheels will
be closer to the inside of the turn than your
vehicle wheels. To compensate for this,
make a larger than normal turning radius
during the turn.
ICrosswinds and rough roads will adversely
affect vehicle/trailer handling, possibly
causing vehicle sway. When being passed
by larger vehicles, be prepared for possible
changes in crosswinds that could affect
vehicle handling. If swaying does occur,firmly grip the steering wheel, steer straight
ahead, and immediately (but gradually) re-
duce vehicle speed. This combination will
help stabilize the vehicle. Never increase
speed.
IBe careful when passing other vehicles.
Passing while towing a trailer requires con-
siderably more distance than normal pass-
ing. Remember the length of the trailer
must also pass the other vehicle before you
can safely change lanes.
ITo maintain engine braking efficiency and
electrical charging performance, do not use
fifth gear (manual transmission) or over-
drive (automatic transmission).
IAvoid holding the brake pedal down too
long or too frequently. This could cause the
brakes to overheat, resulting in reduced
braking efficiency.
When towing a trailer, change oil in the
transmission more frequently.
See the Maintenance schedule.
9-16
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DOT (Department of Transportation) Quality
Grades: All passenger car tires must conform
to Federal Safety Requirements in addition to
these grades.
Treadwear
Treadwear grade is a comparative rating
based on tire wear rate when tested under
controlled conditions on specified government
test courses. For example, a tire graded 150
would wear one and a half (1-1/2) times as well
on the government course as a tire graded
100. However, relative tire performance de-
pends on actual driving conditions, and may
vary significantly from the norm due to varia-
tions in driving habits, service practices and
differences in road characteristics and climate.
Traction A, B and C
Traction grades are A (the highest), B and C.
They represent a tire's ability to stop on wet
pavement as measured under controlled con-
ditions, on specified government test surfaces
of asphalt and concrete. A tire marked with a C
may have poor traction performance.
The traction grade assigned to your ve-
hicle tires is based on straight line brak-
ing traction tests and does not include
cornering (turning) traction.
Temperature A, B and C
Temperature grades are A (the highest), B,
and C. They represent a tire's resistance to
heat build-up, and its ability to dissipate heat
when tested under controlled conditions on a
specified indoor laboratory test wheel. Sus-
tained high temperature can cause tire mate-
rial to degenerate, reducing tire life. Excessive
temperatures can lead to sudden tire failure.
Grade C corresponds to a performance level
which all passenger car tires must meet under
the Federal Motor Vehicle Safety Standard No.
109. Grades A and B represent higher levels of
performance on laboratory test wheels than
the minimum required by law.
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Excessive
speed, underinflation, or excessive
loading, either separately or in combina-
tion, can cause heat buildup and pos-
sible tire failure problems.
UNIFORM TIRE QUALITY
GRADING
9-17
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Page 190 of 197

A Genuine Nissan Service Manual is the best
source of service and repair information for
your vehicle. Filled with wiring diagrams, illus-
trations and step-by-step diagnostic and ad-
justment procedures, this manual is the same
one used by the factory trained technicians
working at your Nissan dealership. Also avail-
able are Genuine NISSAN Owner's Manuals.
For current pricing and availability of a Genu-
ine NISSAN Service Manual or Genuine NIS-
SAN Owner's Manual, contact:In the U.S.A.:
See your NISSAN dealer or contact:
Dyment Distribution Services
20770 Westwood Dr.
Strongsville OH 44136
In a hurry? Call 1-800-247-5321 and charge
your purchase to Visa/Master Card.
In Canada:
To purchase a copy of a Genuine NISSAN
Service Manual or Owner's Manual please
contact your nearest NISSAN Dealer. For the
phone number and location of a NISSAN
Dealer in your area call the Nissan Satisfaction
Center at 1-800-387-0122 and abilingual NISSAN representative will assist
you.
Also available are Genuine NISSAN Service
and Owner's Manuals for older Nissan models.
9-19
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