2012 INFINITI FX octane

9-4Technical and consumer information
FUEL RECOMMENDATION
VK50VE engine
Use unleaded premium gasoline with an
octane rating of at least 91 AKI (Anti-Knock
Index) number (Research octane number
96).
If premium gasoline is not available,
unleaded regular gasoline with an octane
rating of 87 AKI number (Research octane
number 91) may be temporarily used, but
only under the following precautions:
.Have the fuel tank filled only partially
with unleaded regular gasoline, and fill
up with unleaded premium gasoline as
soon as possible.
. Avoid full throttle driving and abrupt
acceleration.
However, for maximum vehicle perfor-
mance, the use of unleaded premium
gasoline is recommended.
VQ35HR engine
INFINITI recommends the use of unleaded
premium gasoline with an octane rating of
at least 91 AKI (Anti-Knock Index) number
(Research octane number 96).
If unleaded premium gasoline is not
available, you may use unleaded regular gasoline with an octane rating of at least
87 AKI number (Research octane number
91), but you may notice a decrease in
performance.
CAUTION
.
Using a fuel other than that specified
could adversely affect the emission
control system, and may also affect
warranty coverage.
. Under no circumstances should a leaded
gasoline be used, because this will
damage the three-way catalyst.
. Do not use E-85 fuel in your vehicle. Your
vehicle is not designed to run on E-85
fuel. Using E-85 fuel can damage the fuel
system components and is not covered
by the INFINITI vehicle limited warranty.
Gasoline specifications
INFINITI recommends using gasoline that
meets the World-Wide Fuel Charter (WWFC)
specifications where it is available. Many
of the automobile manufacturers devel-
oped this specification to improve emis-
sion system and vehicle performance. Ask
your service station manager if the gaso- line meets the World-Wide Fuel Charter
(WWFC) specifications.
Reformulated gasoline
Some fuel suppliers are now producing
reformulated gasolines. These gasolines
are specially designed to reduce vehicle
emissions. INFINITI supports efforts to-
wards cleaner air and suggests that you
use reformulated gasoline when available.
Gasoline containing oxygenates
Some fuel suppliers sell gasoline contain-
ing oxygenates such as ethanol, MTBE and
methanol with or without advertising their
presence. INFINITI does not recommend the
use of fuels of which the oxygenate content
and the fuel compatibility for your INFINITI
cannot be readily determined. 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.
.
The fuel should be unleaded and have
an octane rating no lower than that
recommended for unleaded gasoline.

.If an oxygenate-blend, excepting a
methanol blend, is used, it should
contain no more than 10% oxygenate.
(MTBE may, however, be added up to
15%.)
. If a methanol blend is used, it should
contain no more than 5% methanol
(methyl alcohol, wood alcohol). It
should also contain a suitable amount
of 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
available to ensure that all methanol
blends are suitable for use in INFINITI
vehicles.
If any undesirable driveability problems
such as engine stalling or hard 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
refueling. Gasoline containing oxygenates
can cause paint damage.E-85 fuel
E-85 fuel is a mixture of approximately
85% fuel ethanol and 15% unleaded
gasoline. E-85 can only be used in a
Flexible Fuel Vehicle (FFV). Do not use E-
85 fuel in your vehicle. U.S. government
regulations require fuel ethanol dispensing
pumps to be identified by a small, square,
orange and black label with the common
abbreviation or the appropriate percentage
for that region.
Aftermarket fuel additives
INFINITI does not recommend the use of
any aftermarket fuel additives (Example:
fuel injector cleaner, octane booster, intake
valve deposit removers, etc.) which are
sold commercially. Many of these additives
intended for gum, varnish or deposit
removal may contain active solvent or
similar ingredients that can be harmful to
the fuel system and engine.
Octane rating tips
Using unleaded gasoline with an octane
rating lower than recommended 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 INFINITI retailer
correct the condition. Failure to correct the
condition is misuse of the vehicle, for
which INFINITI is not responsible.
Incorrect ignition timing will result in
knocking, after-run or overheating. This in
turn may cause excessive fuel consumption
or damage to the engine. If any of the
above symptoms are encountered, have
your vehicle checked at an INFINITI retailer
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.CAUTION
.
Your vehicle is not designed to run on E-
85 fuel. Using E-85 fuel in a vehicle not
specifically designed for E-85 fuel can
damage fuel system components and is
not covered by the INFINITI new vehicle
Technical and consumer information9-5

If you plan to travel in another country,
you should first find out if the fuel
available is suitable for your vehicle’s
engine.
Using fuel with too low an octane rating
may cause engine damage. All gasoline
vehicles must be operated with unleaded
gasoline. Therefore, 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 regula-
tions.
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 district
and registered, its modifications, trans-
portation, and registration are the respon-
sibility of the user. INFINITI is not
responsible for any inconvenience that
may result.
STI0431
VEHICLE IDENTIFICATION NUMBER
(VIN) 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.
STI0492
VEHICLE IDENTIFICATION NUMBER
(chassis number)
The number is stamped as shown in the
engine compartment.
Technical and consumer information9-11
WHEN TRAVELING OR REGISTERING YOUR
VEHICLE IN ANOTHER COUNTRY VEHICLE IDENTIFICATION

If your vehicle overheats .............................. 6-11
Starting the engine ...................................... 5-14
Entry/exit function, Automatic drive positioner ... 3-33
Event Data Recorders (EDR) ............................... 9-31
Exhaust gas (carbon monoxide) .......................... 5-3
F
F.M.V.S.S./C.M.V.S.S. certification label ............. 9-12
Filter
Air cleaner housing filter .............................. 8-21
Changing engine oil and filter ...................... 8-12
Flashers (See hazard warning flasher switch) .... 2-42
Flat tire ............................................................... 6-2 Flat towing ........................................................ 9-27
Floor mat cleaning .............................................. 7-5
Fluid Automatic transmission fluid (ATF) ............... 8-15
Brake fluid ................................................... 8-16
Capacities and
recommended fuel/lubricants ........................ 9-2
Engine coolant ............................................... 8-9
Engine oil .................................................... 8-11
Power steering fluid ..................................... 8-15
Window washer fluid ................................... 8-16
FM-AM-SAT radio with Compact Disc
(CD) player ........................................................ 4-63
Fog light switch ................................................ 2-42
Forward Collision Warning (FCW) system ........... 5-67
Front passenger air bag and status light ........... 1-44
Front power seat adjustment ............................... 1-3 Front seat, Front seat adjustment ........................ 1-3 Front-seat active head restraint ........................... 1-9
Fuel
Capacities and
recommended fuel/lubricants ........................ 9-2
Fuel economy............................................... 5-74
Fuel economy information (display) .............. 4-11Fuel octane rating .......................................... 9-4
Fuel recommendation ..................................... 9-4Fuel-filler cap ............................................... 3-24
Fuel-filler door ............................................. 3-24
Gauge ............................................................ 2-8
LOOSE FUEL CAP warning ............................. 3-26
Fuses ................................................................ 8-25
Fusible links ..................................................... 8-25
G
Garage door opener, HomeLink®
Universal Transceiver ........................................ 2-65
Gas cap ............................................................ 3-24
Gauge Engine coolant temperature gauge ................. 2-8
Fuel gauge ..................................................... 2-8
Odometer....................................................... 2-6
Speedometer ................................................. 2-6
Tachometer .................................................... 2-7
Trip computer .............................................. 2-28
General maintenance ................................... 8-2, 8-3
Glove box ......................................................... 2-52
H
Hands-free phone system, Bluetooth®
(models with navigation system) ....................... 4-94
Hands-free phone system, Bluetooth®
(models without navigation system) ................ 4-105
Hazard warning flasher switch .......................... 2-42
Head restraints ................................................... 1-6 Headlight aiming control .................................. 2-39
Headlights Aiming control (See adaptive front lighting
system (AFS)) ............................................... 2-40
Bulb replacement ......................................... 8-30
Headlight switch .......................................... 2-37
Xenon headlights ......................................... 2-36
Headrest ........................................................... 1-10
Heater Automatic climate control .................. 4-43, 4-45
Engine block heater ..................................... 5-87
HomeLink
®Universal Transceiver ...................... 2-65
Hood release .................................................... 3-18
Hook
Coat hooks .................................................. 2-53Luggage hook .............................................. 2-54
Horn ................................................................. 2-43
I
Ignition switch (Push-button) ............................ 5-10
Immobilizer system ........................................... 2-32
In-cabin microfilter ............................................ 4-48
10-3

FUEL RECOMMENDATION:
VK50VE engine
Use unleaded premium gasoline with an
octane rating of at least 91 AKI (Anti-Knock
Index) number (Research octane number
96).
If premium gasoline is not available,
unleaded regular gasoline with an octane
rating of 87 AKI number (Research octane
number 91) may be temporarily used, but
only under the following precautions:
.Have the fuel tank filled only partially
with unleaded regular gasoline, and fill
up with unleaded premium gasoline as
soon as possible.
. Avoid full throttle driving and abrupt
acceleration.
However, for maximum vehicle perfor-
mance, the use of unleaded premium
gasoline is recommended.
VQ35HR engine
INFINITI recommends the use of unleaded
premium gasoline with an octane rating of
at least 91 AKI (Anti-Knock Index) number
(Research octane number 96). If unleaded premium gasoline is not
available, you may use unleaded regular
gasoline with an octane rating of at least
87 AKI number (Research octane number
91), but you may notice a decrease in
performance.
CAUTION
.
Using a fuel other than that specified
could adversely affect the emission
control systems, and may also affect
warranty coverage.
. Under no circumstances should a leaded
gasoline be used, since this will damage
the three way catalyst.
. Do not use E-85 fuel in your vehicle. Your
vehicle is not designed to run on E-85
fuel. Using E-85 fuel can damage the fuel
system components and is not covered
by the INFINITI vehicle limited warranty.
ENGINE OIL RECOMMENDATION:
.Engine oil with API Certification Mark
. Viscosity SAE 5W-30
See “Capacities and recommended fuel/
lubricants” (P.9-2) for engine oil and oil
filter recommendation.
COLD TIRE PRESSURES:
The label is typically located on the driver
side center pillar or on the driver’s door.
For additional information, see “Wheels
and tires” (P.8-32).
NEW VEHICLE BREAK-IN PROCE-
DURES RECOMMENDATION:
During the first 1,200 miles (2,000 km) of
vehicle use, follow the recommendations
outlined in the “Break-in schedule” (P.5-
74) of this Owner’s Manual. Follow these
recommendations for the future reliability
and economy of your new vehicle.
GAS STATION INFORMATION