1998 NISSAN ALTIMA engine

of at least 87 AKI (Anti-Knock Index) num-
ber. However, you may use unleaded gaso-
line with an octane rating as low as 85 AKI
(Anti-Knock Index) number in high altitude
areas [over 4,000 ft (1,219 m)] such as:
Colorado, Montana, New Mexico, Utah,
Wyoming, northeastern Nevada, southern
Idaho, western South Dakota, western Ne-
braska, and the part of Texas which is
directly south of New Mexico.
Using unleaded gasoline with an octane
rating lower than stated above can cause
persistent, heavy ``spark knock.''
(``Spark knock'' is a metallic rapping
noise.) If severe, this can lead to engine
damage. If you detect a persistent heavy
spark knock even when using gasoline
of the stated octane rating, or if you hear
steady spark knock while holding a
steady speed on level roads, have an
authorized dealer correct the condition.
Failure to correct the condition is misuse
of the vehicle, for which NISSAN is not
responsible.
Incorrect ignition timing may result in spark
knock, after-run or overheating, which may
cause excessive fuel consumption or en-
gine damage. If any of the above symptomsare encountered, have your vehicle
checked at an authorized NISSAN dealer or
other competent service facility.
However, now and then you may notice
light spark knock for a short time while
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.
10-4Technical and consumer information
ZX

ENGINE OIL AND OIL FILTER
RECOMMENDATION
Selecting the correct oil
It is essential to choose engine oil with 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 conserve en-
ergy. 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
Petroleum Institute (API) CERTIFICATION
MARK on the front of the container should
be used. This type of oil supersedes the
existing API SG or SH and Energy Conserv-
ing II categories.
If you cannot find engine oil with the CERTI-
FICATION MARK, an API SG or SH an
Energy Conserving II oil with the API Service
Symbol may be used. An oil with a single
designation SG or SH, or in combination with
other categories (for example, SG/CC or
SG/CD) 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 however, meet the API quality and
SAE viscosity ratings specified for your ve-
hicle. Do not mix mineral based and syn-
thetic type oils in the engine.
Oil additives
NISSAN does not recommend the use of oil
additives. The use of an oil additive is not
necessary when the proper oil type is used
and maintenance intervals are followed.
Oil which may contain foreign matter or has
been previously used should not be used.
Oil viscosity
The engine oil viscosity or thickness
changes with temperature. Because of this,
it is important that the engine oil viscosity be
selected based on the temperatures at
which the vehicle will be operated before
the next oil change. The chart ``Recom-
mended SAE viscosity number'' shows the
recommended oil viscosities for the ex-
pected ambient temperatures. Choosing an
oil viscosity other than that recommended
could cause serious engine damage.
ATI0507
Technical and consumer information10-5
ZX

Selecting the correct oil filter
Your new NISSAN vehicle is equipped with
a high- quality genuine NISSAN oil filter.
When replacing, use a genuine NISSAN oil
filter or its equivalent for the reason de-
scribed in ``Change intervals''.
Change intervals
The oil and oil filter change intervals for your
engine are based on the use of the specified
quality oils and filters. Oil and filter other
than the specified quality, or oil and filter
change intervals longer than recommended
could reduce engine life. Damage to the
engine caused by improper maintenance or
use of incorrect oil and filter quality and/or
viscosity is not covered by the new NISSAN
vehicle warranties.
Your engine was filled with a high quality
engine oil when it was built. You do not have
to change the oil before the first recom-
mended change interval. Oil and filter
change intervals depend upon how you use
your vehicle. Operation under the following
conditions may require more frequent oil
and filter changes:
Ð repeated short distance driving at cold
outside temperatures,Ð driving in dusty conditions,
Ð extensive idling,
Ð towing a trailer.
RECOMMENDED SAE
VISCOSITY NUMBER
cSAE 5W-30 viscosity oil is preferred
for all temperatures. SAE 10W-30 vis-
cosity oil may be used if the ambient
temperature is above 0ÉF (-18ÉC).
ATI0509
10-6Technical and consumer information
ZX

Model KA24DE
Type Gasoline, 4-cycle, DOHC
Cylinder arrangement 4-cylinder, in-line
Bore x Stroke in (mm) 3.504 x 3.780 (89.0 x 96.0)
Displacement cu in (cm
3) 145.7 (2,389)
Firing order 1-3-4-2
Idle speed rpm
M/T 700650
A/T (in ``N'' position) 700650
Ignition timing
(degree B.T.D.C. at idle speed)20É62É
CO % at idleIdle mixture screw is pre-
set and sealed at factory
Spark plug BKR5E-11 or FR5AP-10
Camshaft operation Timing Chain
Spark plug gap mm (in) (1.0 to 1.1) 0.039 to 0.043
Generator belt size
Width x Length in (mm)0.8409 x 52.56
(21.36 x 1,335)
The spark ignition system of this ve-
hicle meets all requirements of the
Canadian Interference - Causing
Equipment Regulations.
ENGINE
10-8Technical and consumer information
ZX

When planning to travel in another coun-
try,you should first find out if the fuel
available is suitable for your vehicle's en-
gine.
Using fuel with an octane rating that is too
low may cause engine damage. All gasoline
vehicles must be operated with unleaded
gasoline. Therefore, avoid taking your ve-
hicle to areas where appropriate fuel is not
available.
When transferring the registration of
your vehicle to another country, state,
province or district,it may be necessary to
modify the vehicle to meet local laws and
regulations.
The laws and regulations for motor vehicle
emission control and safety standards vary
according to the country, state, province or
district; therefore, vehicle specifications
may differ.
When any vehicle is to be taken into
another country, state, province or dis-
trict and registered, its modifications,
transportation, and registration are the
responsibility of the user. NISSAN is not
responsible for any inconvenience that
may result.
VEHICLE IDENTIFICATION
NUMBER PLATE
The vehicle identification number plate is
attached as shown. This number is the
identification for your vehicle and is used in
the vehicle registration.
VEHICLE IDENTIFICATION
NUMBER (Chassis number)
The number is stamped as shown.
ADI1016ATI1003
REGISTERING YOUR VEHICLE
IN ANOTHER COUNTRYVEHICLE IDENTIFICATION
10-10Technical and consumer information
ZX

ENGINE SERIAL NUMBER
The number is stamped on the engine as
shown.
F.M.V.S.S. CERTIFICATION
LABEL
The Federal Motor Vehicle Safety Stan-
dards (F.M.V.S.S.) certification label is af-
fixed as shown. This label contains valuable
vehicle information, such as: Gross Vehicle
Weight Ratings (GVWR), Gross Axle
Weight Rating (GAWR), month and year of
manufacture, Vehicle Identification Number,
(VIN), etc. Review it carefully.
ATI1002TI1068
Technical and consumer information10-11
ZX

maximum total weight (load) limit speci-
fied for the vehicle.
cGAWR (Gross Axle Weight Rating) -
maximum weight (load) limit specified for
the front or rear axle.
Determining Vehicle Load Capacity
The load capacity of this vehicle is determined
by weight, not by available cargo space. For
example, a luggage rack, bike carrier, cartop
carrier or similar equipment does not increase
load carrying capacity of your vehicle.
To determine vehicle load capacity:
Vehicle weight can be determined by using
a commercial-grade scale, found at places
such as a truck stop, gravel quarry, grain
elevator, or a scrap metal recycling facility.
1)
Determine the curb weight of your vehicle.
2) Compare the curb weight amount to the
GVWR specified for your vehicle to de-
termine how much more weight your
vehicle can carry.
3) After loading (cargo and passengers),
re-weigh your vehicle to determine if
either GVWR or GAWR for your vehicle
is exceeded. If GVWR is exceeded, re-
move cargo as necessary. If either thefront or rear GAWR is exceeded, shift the
load or remove cargo as necessary.
Loading Tips
cThe GVW must not exceed GVWR or
GAWR as specified on the FMVSS Cer-
tification Label.
cDo not load the front and rear axle to the
GAWR. Doing so will exceed the GVWR.
WARNING
c
Properly secure all cargo to help pre-
vent it from sliding or shifting. Do not
place cargo higher than the seat-
backs. In a sudden stop or collision,
unsecured cargo could cause per-
sonal injury.
cDo not load your vehicle any heavier
than the GVWR or the maximum
front and rear GAWRs. If you do,
parts on your vehicle can break, or it
can change the way your vehicle
handles. This could result in loss of
control and cause personal injury.
cOverloading can shorten the life of
your vehicle. Failures caused by
overloading are not covered by your
warranty.Your new vehicle was designed to be used
primarily to carry passengers and cargo.
Remember that towing a trailer will place
additional loads on your vehicle's engine,
drive train, steering, braking and other sys-
tems.
Information on trailer towing ability and the
special equipment required should be ob-
tained from an authorized NISSAN dealer.
He can obtain aNissan Trailer Towing
Guidefor you.
TI1011M
TRAILER TOWING
10-14Technical and consumer information
ZX

cAlways block the wheels on both vehicle
and trailer when parking. Parking on a
slope is not recommended; however, if
you must do so, and if your vehicle is
equipped with an automatic transmis-
sion, first block the wheels and apply the
parking brake, and then move the shift
lever into the P position. If you move the
shift lever to the P position before block-
ing the wheels and applying the parking
brake, transmission damage could occur.
cWhen going down a hill, shift into a lower
gear and use the engine braking effect.
When ascending a long grade, downshift
the transmission to a lower gear and
reduce speed to reduce chances of en-
gine overloading and/or overheating.
cIf the engine coolant rises to an ex-
tremely high temperature when the air
conditioner system is on, turn off the air
conditioner. Coolant heat can be addi-
tionally vented by opening the windows,
switching the fan control to high and
setting the temperature control to the
HOT position.
cTrailer towing requires more fuel than
normal circumstances.cAvoid towing a trailer for the first 500
miles (800 km).
cHave your vehicle serviced more often
than at intervals specified in the recom-
mended Maintenance Schedule.
cWhen 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.
cCrosswinds and rough roads will ad-
versely affect vehicle/trailer handling,
possibly causing vehicle sway. When
being passed by larger vehicles, be pre-
pared for possible changes in crosswinds
that could affect vehicle handling. If
swaying does occur, firmly grip the steer-
ing wheel, steer straight ahead, and im-
mediately (but gradually) reduce vehicle
speed. This combination will help stabi-
lize the vehicle. Never increase speed.
cBe careful when passing other vehicles.
Passing while towing a trailer requires
considerably more distance than normal
passing. Remember the length of the
trailer must also pass the other vehicle
before you can safely change lanes.cTo maintain engine braking efficiency
and electrical charging performance, do
not use fifth gear (manual transmission)
or overdrive (automatic transmission).
cAvoid holding the brake pedal down too
long or too frequently. This could cause
the brakes to overheat, resulting in re-
duced braking efficiency.
When towing a trailer, change the trans-
mission fluid more frequently. For addi-
tional information see the ``Mainte-
nance'' section earlier in this manual.
Technical and consumer information
10-17
ZX