engine INFINITI G37 2012 Owners Manual

Black plate (424,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]8-18 Maintenance and do-it-yourself DI0137MA
Check the fluid level in each cell (Remove
the battery cover if it is necessary). It
should be between the UPPER LEVEL
* 1
and LOWER LEVEL
* 2
lines.
If it is necessary to add fluid, add only
distilled water to bring the level to the
indicator in each filler opening. Do not
overfill. SDI1480C
1. Remove the cell plugs
* A
.
2. Add distilled water up to the UPPER
LEVEL
* 1
line.
If the side of the battery is not clear,
check the distilled water level by
looking directly above the cell; the
condition
* 1
indicates OK and the
conditions
* 2
needs more to be added.
3. Tighten cell plugs
* A
.
Vehicles operated in high temperatures or
under severe conditions require frequent
checks of the battery fluid level. JUMP STARTING GUID-6645B036-2286-48B9-B8ED-5E16B522CC2D
If jump starting is necessary, see “ Jump
starting ” (P.6-8). If the engine does not
start by jump starting, the battery may
have to be replaced. Contact an INFINITI
retailer.

Black plate (425,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]GUID-943BC148-9A3A-474D-8113-30A996E2E73B
CAUTION. Do not ground accessories directly to the
battery terminal. Doing so will bypass
the variable voltage control system and
the vehicle battery may not charge
completely.
. Use electrical accessories with the en-
gine running to avoid discharging the
vehicle battery.
The variable voltage control system mea-
sures the amount of electrical discharge
from the battery and controls voltage
generated by the generator. GUID-2598C543-2A3B-4E05-90F6-3739930B5F0C
SDI2117
VQ25HR engine
1. Power steering fluid pump
2. Alternator
3. Crankshaft pulley
4. Air conditioner compressor
! : Tension checking points SDI2119
VQ37VHR engine
1. Power steering fluid pump
2. Alternator
3. Crankshaft pulley
4. Air conditioner compressor
5. Drive belt auto-tensioner
WARNING Be sure the ignition switch is in the OFF or
LOCK position before servicing drive belts.
The engine could rotate unexpectedly.
1. Visually inspect each belt for signs of
unusual wear, cuts, fraying or loosen-
Maintenance and do-it-yourself
8-19VARIABLE VOLTAGE CONTROL SYSTEM DRIVE BELTS

Black plate (426,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]8-20 Maintenance and do-it-yourselfess. If the belt is in poor condition or
loose, have it replaced or adjusted by
an INFINITI retailer.
2. Have the belts checked regularly for
condition and tension in accordance
with the maintenance schedule in your
“ INFINITI Service and Maintenance
Guide ” . GUID-B889B2DB-0702-4E25-998D-9EFCEB6380ED
WARNING Be sure the engine and the ignition switch
are off and that the parking brake is
engaged securely.
CAUTION Be sure to use the correct socket to remove
the spark plugs. An incorrect socket can
damage the spark plugs. SDI2020
REPLACING SPARK PLUGS GUID-89AEBA13-D3D8-4D70-90D6-4674BC5CE9C3
If replacement is required, see an INFINITI
retailer for servicing.
Iridium-tipped spark plugs GUID-4C8CEFDE-424F-4945-8A13-7DFAE22BFEE0
It is not necessary to replace the iridium-
tipped spark plugs as frequently as the
conventional type spark plugs since they
will last much longer. Follow the main-
tenance schedule in “ INFINITI Service and
Maintenance Guide ” , but do not reuse
them by cleaning or regapping.SPARK PLUGS

Black plate (427,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]Always replace spark plugs with recom-
mended or equivalent ones. GUID-FC3BF8A1-4ABE-43E9-86D6-8E1A682A1F74
SDI2033
Remove the retainers
* 1
as illustrated and
pull out the filter element
* 2
.
The filter element should not be cleaned
and reused. Replace it according to the
maintenance intervals. See “ INFINITI Ser-
vice and Maintenance Guide ” for mainte-
nance intervals. When replacing the filter, wipe the inside of the air cleaner housing
and the cover with a damp cloth.
WARNING . Operating the engine with the air
cleaner removed can cause you or others
to be burned. The air cleaner not only
cleans the air, it stops 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.
. Never pour fuel into the throttle body or
attempt to start the engine with the air
cleaner removed. Doing so could result
in serious injury.
Maintenance and do-it-yourself
8-21AIR CLEANER

Black plate (430,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]8-24 Maintenance and do-it-yourself GUID-41D7E39E-6F5A-404E-A0B5-F23908CDD33C
SDI1479A
ENGINE COMPARTMENT GUID-1BD473A4-2C19-4D87-ADC3-1791751AF8EF
CAUTIONNever use a fuse of a higher or lower
amperage rating than that specified on the
fuse box cover. This could damage the
electrical system or cause a fire.
If any electrical equipment does not
operate, check for an open fuse.
1. Be sure the ignition switch is pushed to
the OFF or LOCK position and the
headlight switch is turned to OFF. 2. Open the engine hood and remove the
cover on the battery and the fuse/
fusible link holder.
3. Remove the fuse/fusible link holder
cover.
4. Remove the fuse with the fuse puller.
SDI1754
5. If the fuse is open
* A
, replace it with a
new fuse
* B
. Spare fuses are stored in
the passenger compartment fuse box.
6. If a new fuse also opens, have the
electrical system checked and repaired
by an INFINITI retailer.
Fusible links GUID-E9133FFB-99A7-4084-8BC3-32BBC0B20EAC
If any electrical equipment does not
operate and fuses are in good condition,
check the fusible links. If any of these
fusible links are melted, replace only with
genuine INFINITI parts.FUSES

Black plate (451,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]9 Technical and consumer information Capacities and recommended fuel/lubricants .......... 9-2
Fuel recommendation ......................................... 9-4
Engine oil and oil filter recommendation ............ 9-6
Air conditioning system refrigerant and
lubricant recommendations ................................ 9-7
Specifications ......................................................... 9-8
Engine ................................................................ 9-8
Wheels and tires ................................................ 9-9
Dimensions ...................................................... 9-11
When traveling or registering your vehicle in
another country .................................................... 9-11
Vehicle identification ............................................ 9-12
Vehicle Identification Number (VIN) plate .......... 9-12
Vehicle identification number
(chassis number) .............................................. 9-12
Engine serial number ....................................... 9-12
F.M.V.S.S./C.M.V.S.S. certification label ............. 9-13
Emission control information label ................... 9-13
Tire and loading information label .................... 9-14
Air conditioner specification label ..................... 9-14
Installing front license plate ................................. 9-15
Sedan .............................................................. 9-15 Coupe (except for INFINITI Performance Line,
Aerodynamic Package models) ........................ 9-17
Coupe (INFINITI Performance Line,
Aerodynamic Package models) ........................ 9-19
Vehicle loading information .................................. 9-20
Terms ............................................................. 9-20
Vehicle load capacity ...................................... 9-21
Loading tips .................................................... 9-22
Measurement of weights ................................. 9-23
Towing a trailer .................................................... 9-23
Flat towing ...................................................... 9-23
Uniform tire quality grading ................................. 9-24
Treadwear ....................................................... 9-24
Traction AA, A, B and C ................................... 9-24
Temperature A, B and C .................................. 9-24
Emission control system warranty ........................ 9-25
Reporting safety defects ....................................... 9-26
Readiness for Inspection/Maintenance (I/M) test
(US only) .............................................................. 9-27
Event Data Recorders (EDR) .................................. 9-27
Owner ’ s Manual/Service Manual
order information ................................................. 9-28

Black plate (452,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]9-2 Technical and consumer information GUID-83DC73A1-0226-4579-85B6-0002CD56C740
The following are approximate capacities. The actual refill capacities may be a little different. When refilling, follow the procedure
instructed in the “ 8. Maintenance and do-it-yourself ” section to determine the proper refill capacity. Capacity (Approximate)
Recommended specifications
US measure Imp measure Liter
Fuel 20 gal 16-5/8 gal 76 See “ Fuel recommendation ” (P.9-4).
Engine oil (VQ37VHR)*1
. Engine oil with API Certification Mark*2*3
. Viscosity SAE 5W-30Drain and refill
With oil filter change 5-1/8 qt 4-3/8 qt 4.9
Without oil filter change 4-7/8 qt 4 qt 4.6
Engine oil (VQ25HR)*1
Drain and refill
With oil filter change 5 qt 4-1/8 qt 4.7
Without oil filter change 4-5/8 qt 3-7/8 qt 4.4
Cooling system (VQ37VHR)
Automatic transmission
model With reservoir 9 qt 7-1/2 qt 8.5
Pre-diluted Genuine NISSAN Long Life Antifreeze/Coolant (blue) or equivalentReservoir 7/8 qt 3/4 qt 0.8
Manual transmission model With reservoir 9-1/8 qt 7-5/8 qt 8.6
Reservoir 7/8 qt 3/4 qt 0.8
Cooling system (VQ25HR)
AWD With reservoir 9-1/4 qt 7-3/4 qt 8.8
Reservoir 7/8 qt 3/4 qt 0.8
2WD With reservoir 8-3/4 qt 7-1/4 qt 8.3
Reservoir 7/8 qt 3/4 qt 0.8
Automatic transmission fluid — — — Genuine NISSAN Matic S ATF*4
Manual transmission gear oil — — — Genuine NISSAN Manual Transmission Fluid (MTF)
HQ Multi 75W-85 or API GL-4, Viscosity SAE 75W-85
Differential gear oil — — — For 7A/T 2WD models:
API GL-5 Synthetic Gear Oil Viscosity SAE 75W-90*6
All other models:
Genuine NISSAN Differential Oil Hypoid Super GL-5 80W-90 or API GL-5, Viscosity SAE
80W-90*5
Transfer fluid — — — Genuine NISSAN Matic J ATF*7CAPACITIES AND RECOMMENDED FUEL/
LUBRICANTS

Black plate (453,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]Power steering fluid (PSF)
Refill to the proper oil level according to the instructions in the “ 8.
Maintenance and do-it-yourself ” section. Genuine NISSAN PSF or equivalent*8
Brake and clutch fluid Genuine NISSAN Super Heavy Duty Brake Fluid*9 or equivalent DOT 3
Multi-purpose grease
Without limited slip differential — — —
NLGI No. 2 (Lithium soap base)
With limited slip differential — — —
Air conditioning system refrigerant — — — HFC-134a (R-134a)*10
Air conditioning system lubricants — — — NISSAN A/C System Oil
Type S or exact equivalent
Window washer fluid — — — Genuine NISSAN Windshield Washer Concentrate Cleaner & Antifreeze or equivalent
*1:
For additional information, see “ Engine oil ” (P.8-11) for changing engine oil.
*2: INFINITI recommends Genuine NISSAN Ester Engine Oil available at an INFINITI retailer.
*3: For additional information, see “ Engine oil and oil filter recommendation ” (P.9-6).
*4: Using automatic transmission fluid other than Genuine NISSAN Matic S ATF will cause deterioration in driveability and automatic transmission durability, and may damage the automatic
transmission, which is not covered by the INFINITI new vehicle limited warranty.
*5: For hot climates, viscosity SAE 90 is suitable for ambient temperatures above 32 8 F (0 8 C).
*6: See an INFINITI retailer for service for synthetic oil.
*7: Using transfer fluid other than Genuine NISSAN Matic J ATF will cause deterioration in driveability and transfer durability, and may damage the transfer, which is not covered by the INFINITI new
vehicle limited warranty.
*8: DEXRON TM
VI type ATF may also be used.
*9: Available in mainland USA through an INFINITI retailer.
*10: For additional information, see “ Vehicle identification ” (P.9-12) for air conditioner specification label.
Technical and consumer information
9-3

Black plate (454,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]9-4 Technical and consumer informationFUEL RECOMMENDATION GUID-FD3A9510-2D82-4C2F-81D2-3EECA4BDE202
VQ25HR engine GUID-DECF13E8-0D22-45CE-9350-2A04A0BCABEB
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.
VQ37VHR engine GUID-62D6EF4E-F486-46EA-A1E0-D4BB9121EA3A
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.
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 GUID-E8A76FAE-F1E8-41BA-ACCF-E439B6733579
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 GUID-21D3DE2D-574C-45D2-AE5B-28DCCCBF286C
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 GUID-ABC4FC82-F0F7-44E4-BDD3-2D84252E0A47
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.

Black plate (455,1)
[ Edit: 2012/ 1/ 17 Model: V36-D ]. 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 GUID-BE764F0C-6A10-497C-B4F9-CD1D0E122DA3
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 GUID-663D952D-0F24-4D6E-ABBF-21302053695C
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 GUID-527A0AB1-299D-45DA-9B92-4DDA2444B93C
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 information
9-5