2003 NISSAN ALTIMA fuel

The air cleaner filter should not be cleaned and
reused. Replace it according to the maintenance
intervals shown in the “NISSAN Service and
Maintenance Guide.” When replacing the filter,
wipe the inside of the air cleaner filter housing
and the cover with a damp cloth.
To remove the air cleaner filter:
s1Loosen the screws.
s2Push down on the clips.
WARNING
cOperating the engine with the air
cleaner removed can cause you or oth-
ers to be burned. The air cleaner not
only cleans the air, it stops the flame if
the engine backfires. If it isn’t there, and
the engine backfires, you could be
burned. Do not drive with the air cleaner
removed, and be careful when working
on the engine with the air cleaner
removed.
cNever pour fuel into the throttle body or
attempt to start the engine with the air
cleaner removed. Doing so could result
in serious injury.
IN-CABIN MICROFILTER (if so
equipped)
The in-cabin microfilter restricts the entry of air-
borne dust and pollen particles and reduces
some objectionable outside odors. The filter is
located behind the glove box. Refer to the
“NISSAN Service and Maintenance Guide” for
change intervals.
To replace the filter, perform the following proce-
dure:1. Remove the 2 lower glove box hinge pins.
Remove the glove box from the opening and
let it hang by the cord.
WDI0227LDI0154
AIR CLEANER
8-22Maintenance and do-it-yourself
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9 Technical and consumer information
Capacities and recommended fuel/lubricants.........9-2
Fuel recommendation...........................9-3
Engine oil and oil filter recommendation...........9-5
Recommended SAE viscosity number............9-6
Air conditioner system refrigerant and
lubricant recommendations......................9-6
Specifications.....................................9-7
Engine........................................9-7
Wheels and tires...............................9-8
Dimensions and weights........................9-8
When traveling or registering your vehicle in
another country...................................9-9
Vehicle identification...............................9-9
Vehicle identification number (VIN) plate..........9-9
Vehicle identification number
(chassis number)...............................9-9
Engine serial number...........................9-10
F.M.V.S.S. certification label....................9-10Emission control information label...............9-11
Tire placard...................................9-11
Air conditioner specification label................9-11
Installing front license plate........................9-12
Vehicle loading information........................9-12
Terms........................................9-12
Determining vehicle load capacity...............9-13
Loading tips..................................9-13
Towing a trailer...................................9-14
Maximum load limits...........................9-14
Towing load/specification chart.................9-15
Towing safety.................................9-15
Uniform tire quality grading........................9-17
Emission control system warranty..................9-18
Reporting safety defects (US only).................9-18
Readiness for inspection/maintenance (I/M) test.....9-19
Owner’s manual/service manual order information....9-20
In the event of a collision.......................9-21
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The following are approximate capacities. The actual refill capacities may be a little different. When refilling, follow the procedure
described in the “Maintenance and do-it-yourself” section to determine the proper refill capacity.
Capacity (Approximate) Recommended Fluids and Lubricants
US measure Imp measure Liter
Fuel 20 gal 16-5/8 gal 75.8 Unleaded gasoline with an octane rating of at least 87 AKI (RON 91)*1
Engine oil *7
Drain and Refill
With oil filter change QR25DE 4-1/2 qt 3-3/4 qt 4.2
• API Certification Mark *2 *3
• API grade SL, Energy Conserving *2 *3
• ILSAC grade GF-III*2 *3 VQ35DE 4-1/4 qt 3-1/2 qt 4.0
Without oil filter change QR25DE 4-1/4 qt 3-1/2 qt 4.0
VQ35DE 3-7/8 qt 3-1/4 qt 3.7
Cooling system
With reservoir
QR25DE 8 qt 6-3/4 qt 7.6
50% Genuine NISSAN Anti-freeze Long Life Coolant or equivalent
50% Demineralized or distilled water
VQ35DE 8-5/8 qt 7-1/4 qt 8.2
Manual transmission gear oil 4-7/8 pt 4 pt 2.3 API GL-4, Viscosity SAE 75W-85
Automatic transmission fluid Refill to the proper level according to the instructions in
the “Maintenance and do-it-yourself” section.Genuine Nissan Matic D ATF (Continental U.S. and Alaska) or Canada
NISSAN Automatic Transmission Fluid.*4
Power steering fluid (PSF)Genuine NISSAN PSF or equivalent.*8
Brake and clutch fluidGenuine NISSAN Super Heavy Duty Brake Fluid*5 or equivalent DOT 3
(US FMVSS No. 116)
Multi-purpose grease———NLGINo.2(Lithium Soap base)
Air conditioning system refrigerant— — — HFC-134a (R-134a)*6
Air conditioning system lubricants— — — NISSAN A/C System Lubricant Type DH-PS or equivalent*6
Winshield washer fluid— — — Genuine NISSAN Windshield Washer Concentrate Cleaner & Anti-freeze
or equivalent
*1: For further details, see “Fuel recommendation.”
*2: For further details, see “Engine oil and oil filter recommendations.”
*3: For further details, see “Recommended SAE engine oil viscosity.”
*4: Dexron™ III/Mercon™ or equivalent may also be used. Outside the Continental United States and Alaska contact a NISSAN dealership for more information regarding suitable fluids, including rec-
ommended brand(s) of Dexron™ III/Mercon™ Automatic Transmission Fluid.
*5: Available in mainland USA through your NISSAN dealer.
*6: For further details, see “Air conditioner specification label.”
*7: For further details, see “Changing engine oil.”
*8: For Canada, NISSAN Automatic Transmission Fluid (ATF) , Dexron™ III/Mercon™, or equivalent ATF may also be used.
CAPACITIES AND RECOMMENDED
FUEL/LUBRICANTS
9-2Technical and consumer information
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FUEL RECOMMENDATION
For 2.5L engine
Use unleaded regular gasoline with an octane
rating of at least 87 AKI (Anti-Knock Index) num-
ber (Research octane number 91) .
For 3.5L
Use unleaded regular gasoline with an octane
rating of at least 87 AKI (Anti-Knock Index) num-
ber (Research octane number 91) .
For improved vehicle performance, NISSAN rec-
ommends the use of unleaded premium gasoline
with an octane rating of at least 91 AKI number
(Research octane number 96) .
CAUTION
cUsing a fuel other than that specified
could adversely affect the emission
control system, and may also affect the
warranty coverage.
cUnder no circumstances should a
leaded gasoline be used, because this
will damage the three-way catalyst.
Reformulated gasoline
Some fuel suppliers are now producing reformu-
lated gasolines. These gasolines are specially
designed to reduce vehicle emissions. NISSANsupports efforts towards cleaner air and sug-
gests that you use reformulated gasoline when
available.
Gasoline containing oxygenates
Some fuel suppliers sell gasoline containing oxy-
genates such as ethanol, MTBE and methanol
with or without advertising their presence.
NISSAN does not recommend the use of fuels of
which the oxygenate content and the fuel com-
patibility for your NISSAN cannot be readily de-
termined. If in doubt, ask your service station
manager.
If you use oxygenate-blend gasoline, please take
the following precautions as the usage of such
fuels may cause vehicle performance problems
and/or fuel system damage.
cThe fuel should be unleaded and have
an octane rating no lower than that
recommended for unleaded gasoline.
cIf an oxygenate-blend other than
methanol blend is used, it should con-
tain no more than 10% oxygenate.
(MTBE may, however, be added up to
15%.)
cIf a methanol blend is used, it should
contain no more than 5% methanol
(methyl alcohol, wood alcohol) . It
should also contain a suitable amountof appropriate cosolvents and corro-
sion inhibitors. If not properly formu-
lated with appropriate cosolvents and
corrosion inhibitors, such methanol
blends may cause fuel system damage
and/or vehicle performance problems.
At this time, sufficient data is not avail-
able to ensure that all methanol blends
are suitable for use in NISSAN ve-
hicles.
If any driveability problems such as engine stall-
ing and difficult hot-starting are experienced after
using oxygenate-blend fuels, immediately
change to a non-oxygenate fuel or a fuel with a
low blend of MTBE.
Take care not to spill gasoline during refu-
eling. Gasoline containing oxygenates can
cause paint damage.
Aftermarket fuel additives
NISSAN does not recommend the use of any fuel
additives (for example, fuel injector cleaner, oc-
tane booster, intake valve deposit removers, etc.)
which are sold commercially. Many of these ad-
ditives intended for gum, varnish or deposit re-
moval may contain active solvents or similar in-
gredients that can be harmful to the fuel system
and engine.
Technical and consumer information9-3
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Octane rating tips
In most parts of North America, you should use
unleaded gasoline with an octane rating of at
least 87 AKI (Anti-Knock Index) number. How-
ever, you may use unleaded gasoline 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
Nebraska, 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 se-
vere, 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 a NISSAN 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 and/or overheating, which may
cause excessive fuel consumption or enginedamage. If any of the above symptoms are en-
countered, have your vehicle checked at a
NISSAN dealer.
However, now and then you may notice
light spark knock for a short time while
accelerating or driving up hills. This is not a
cause for concern, because you get the
greatest fuel benefit when there is light
spark knock for a short time under heavy
engine load.
9-4Technical and consumer information
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ENGINE OIL AND OIL FILTER
RECOMMENDATION
Selecting the correct oil
It is essential to choose engine oil with the cor-
rect quality and viscosity to ensure satisfactory
engine life and performance. NISSAN recom-
mends the use of a low friction oil (energy con-
serving oil) in order to improve fuel economy and
conserve 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 Petro-
leum Institute (API) CERTIFICATION MARK onthe front of the container should be used. This
type of oil supersedes the existing API SG, SH, or
SJ and Energy Conserving II categories.
If you cannot find engine oil with the API CERTI-
FICATION MARK, use API grade SL Energy
Conserving oil. An oil with a single designation
SL, or in combination with other categories (for
example, SL/CF) may also be used if one with the
API CERTIFICATION MARK cannot be found. An
ILSAC grade GF-III oil can also be used.
NISSAN recommends mineral based oils. These
oils must, however, meet the API quality and SAE
viscosity ratings specified for your vehicle.
Oil additives
NISSAN does not recommend the use of oil
additives. The use of an oil additive is not neces-
sary when the proper oil type is used and main-
tenance 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
to select the engine oil viscosity based on the
temperatures at which the vehicle will be oper-
ated before the next oil change. The chart “Rec-
ommended SAE viscosity number” shows the
recommended oil viscosities for the expected
ambient temperatures. Choosing an oil viscosity
other than that recommended could cause seri-
ous engine damage.
Selecting the correct oil filter
Your new NISSAN vehicle is equipped with a
high-quality genuine NISSAN oil filter. When re-
placing, use a genuine NISSAN oil filter or its
equivalent for the reason described in “Change
intervals”.
WTI0082
Technical and consumer information9-5
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When planning to drive your NISSAN ve-
hicle in another country,you should first find
out if the fuel available is suitable for your vehi-
cle’s engine.
Using fuel with an octane rating that is too low
may cause engine damage. All gasoline vehicles
must be operated with unleaded gasoline. There-
fore, avoid taking your vehicle 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 emis-
sion control and safety standards vary according
to the country, state, province or district; there-
fore, vehicle specifications may differ.
When any vehicle is to be taken into an-
other country, state, province or district
and registered, its modifications, transpor-
tation, and registration are the responsibil-
ity of the user. NISSAN is not responsible
for any inconvenience that may result.
VEHICLE IDENTIFICATION NUMBER
(VIN) PLATE
The vehicle identification number (VIN) plate is
attached as shown. This number is the identifica-
tion for your vehicle and is used in the vehicle
registration.
VEHICLE IDENTIFICATION NUMBER
(chassis number)
The vehicle identification number is located as
shown.
LTI0025WTI0037
WHEN TRAVELING OR REGISTERING
YOUR VEHICLE IN ANOTHER
COUNTRYVEHICLE IDENTIFICATION
Technical and consumer information9-9
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to the vehicle bumper or axle. Be sure to leave
enough slack in the chains to permit turning
corners.
Trailer lights
Trailer lights should comply with federal and/or
local regulations. When wiring the vehicle for
towing, connect the stop and tail light pickup into
the vehicle electrical circuit.
Trailer brakes
If your trailer is equipped with a braking system,
make sure it conforms to federal and/or local
regulations and that it is properly installed.
WARNING
Never connect a trailer brake system di-
rectly to the vehicle brake system.
Pre-towing tips
cBe certain your vehicle maintains a level
position when a loaded and/or unloaded
trailer is hitched. Do not drive the vehicle if it
has an abnormal nose-up or nose-down
condition; check for improper tongue load,
overload, worn suspension or other possible
causes of either condition.
cAlways secure items in the trailer to prevent
load shift while driving.cBe certain your rear view mirrors conform to
all federal, state or local regulations. If not,
install any mirrors required for towing before
driving the vehicle.
Trailer towing tips
In order to gain skill and an understanding of the
vehicle’s behavior, you should practice turning,
stopping and backing up in an area which is free
from traffic. Steering stability and braking perfor-
mance will be somewhat different than under
normal driving conditions.
cAlways secure items in the trailer to prevent
load shift while driving.
cAvoid abrupt starts, acceleration or stops.
cAvoid sharp turns or lane changes.
c
Always drive your vehicle at a moderate speed.
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 transmission, first block the
wheels and apply the parking brake, and
then move the transmission shift selector
lever into the P (Park) position. If you move
the shift selector lever to the P (Park) posi-
tion before blocking 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 going up a long grade, downshift the
transmission to a lower gear and reduce
speed to reduce chances of engine over-
loading and/or overheating. However, for
long steep grades, do not stay in 1st or 2nd
gear when driving above 35 MPH (56 km/h) .
cIf the engine coolant rises to an extremely
high temperature when the air conditioner
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 HOT position.
cTrailer towing requires more fuel than normal
circumstances.
cAvoid towing a trailer for your vehicle’s first
500 miles (805 km) .
cHave your vehicle serviced more often than
at intervals specified in the recommended
Maintenance Schedule in the “NISSAN Ser-
vice and Maintenance Guide”.
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.
9-16Technical and consumer information
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