2011 INFINITI G-COUPE engine

1. Remove the cell plugsA.
2. Add distilled water up to the UPPER LEVEL
1line.
If the side of the battery is not clear, check
the distilled water level by looking directly
above the cell; the condition
1indicates
OK and the conditions
2needs more to be
added.
3. Tighten cell plugsA.
Vehicles operated in high temperatures or un-
der severe conditions require frequent checks
of the battery fluid level.
JUMP STARTING
If jump starting is necessary, see “JUMP START-
ING” in the “6. In case of emergency” section. If
the engine does not start by jump starting, the
battery may have to be replaced. Contact an
INFINITI retailer.
CAUTION
● Do not ground accessories directly to the
battery terminal. Doing so will bypass the
variable voltage control system and the ve-
hicle battery may not charge completely.
● Use electrical accessories with the engine
running to avoid discharging the vehicle
battery.
The variable voltage control system measures
the amount of electrical discharge from the
battery and controls voltage generated by the
generator.
SDI1480C
VARIABLE VOLTAGE CONTROL SYSTEM
8-16Maintenance and do-it-yourself

1. Power steering fluid pump
2. Alternator
3. Crankshaft pulley
4. Air conditioner compressor
: Tension checking points1. 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 en-
gine could rotate unexpectedly.
1. Visually inspect each belt for signs of
unusual wear, cuts, fraying or looseness.
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 con- dition and tension in accordance with the
maintenance schedule in your “INFINITI
Service and Maintenance Guide”.
VQ25HR engine
SDI2117
VQ37VHR engine
SDI2119
DRIVE BELTS
Maintenance and do-it-yourself8-17

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.
REPLACING SPARK PLUGS
If replacement is required, see an INFINITI re-
tailer for servicing.
Iridium-tipped spark plugs
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 maintenance schedule in
“INFINITI Service and Maintenance Guide”, but
do not reuse them by cleaning or regapping.
Always replace spark plugs with recommended
or equivalent ones.Remove the retainers
1as illustrated and pull
out the filter element
2.
The filter element should not be cleaned and
reused. Replace it according to the mainte-
nance intervals. See “INFINITI Service and Main-
tenance Guide” for maintenance intervals.
SDI2020
SDI2033
SPARK PLUGS AIR CLEANER
8-18Maintenance and do-it-yourself

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 work-
ing on the engine with the air cleaner
removed.
● Never pour fuel into the throttle body or at-
tempt to start the engine with the air cleaner
removed. Doing so could result in serious
injury.
CLEANING
If your windshield is not clear after using the
windshield washer or if a wiper blade chatters
when running, wax or other material may be on
the blade or windshield.
Clean the outside of the windshield with a
washer solution or a mild detergent. Your wind-
shield is clean if beads do not form when
rinsing with clear water.
Clean each blade by wiping it with a cloth
soaked in a washer solution or a mild deter-
gent. Then rinse the blade with clear water. If
your windshield is still not clear after cleaning
the blades and using the wiper, replace the
blades.
Worn windshield wiper blades can damage the
windshield and impair driver vision.
WINDSHIELD WIPER BLADES
Maintenance and do-it-yourself8-19

If the brakes do not operate properly, have the
brakes checked by an INFINITI retailer.
SELF-ADJUSTING BRAKES
Your vehicle is equipped with self-adjusting
brakes.
The disc-type brakes self-adjust every time the
brake pedal is applied.
WARNING
See an INFINITI retailer for a brake system
check if the brake pedal height does not return
to normal.
BRAKE PAD WEAR WARNING
The disc brake pads have audible wear warn-
ings. When a brake pad requires replacement, it
will make a high pitched scraping sound when
the vehicle is in motion. This scraping sound
will first occur only when the brake pedal is
depressed. After more wear of the brake pad,
the sound will always be heard even if the brake
pedal is not depressed. Have the brakes
checked as soon as possible if the wear warn-
ing sound is heard.
Under some driving or climate conditions, occa-
sional brake squeak, squeal or other noise may
be heard. Occasional brake noise during light tomoderate stops is normal and does not affect
the function or performance of the brake sys-
tem.
Proper brake inspection intervals should be fol-
lowed.
For additional information, see the main-
tenance log section of your “INFINITI Service
and Maintenance Guide” for maintenance inter-
vals.
ENGINE COMPARTMENT
CAUTION
Never 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 head-
light switch is turned to OFF.
SDI1479A
BRAKES FUSES
Maintenance and do-it-yourself8-21

2. Open the engine hood and remove thecover 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.
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 elec- trical system checked and repaired by an
INFINITI retailer.
Fusible links
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.
SDI1754
8-22Maintenance and do-it-yourself

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 .................................. 9-12
Vehicle identification ............................. 9-12
Vehicle Identification Number (VIN) plate ........9-12
Vehicle identification number (chassis
number) ...................................... 9-12
Engine serial number .......................... 9-13
F.M.V.S.S./C.M.V.S.S. certification label .........9-13
Emission control information label ..............9-14
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)
.................9-18
Vehicle loading information .......................9-19
Terms ........................................ 9-19
Vehicle load capacity .......................... 9-20
Loading tips .................................. 9-21
Measurement of weights ....................... 9-22
Towing a trailer .................................. 9-22
Flat towing ................................... 9-22
Uniform tire quality grading .......................9-23
Treadwear .................................... 9-23
Traction AA, A, B and C ........................ 9-23
Temperature A, B and C ....................... 9-23
Emission control system warranty .................9-24
Reporting safety defects .......................... 9-24
Readiness for Inspection/Maintenance (I/M) test
(US only) ........................................ 9-25
Event
Data Recorders (EDR) ....................... 9-26
Owner’s Manual/Service Manual order
information ...................................... 9-26
In the event of a collision ......................9-27

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 gal16-5/8 gal 76 See “FUEL RECOMMENDATION” later in this section.
Engine oil*2
Drain and refill With oil filter change 5-1/8 qt4-3/8 qt 4.9 •Engine oil with API Certification Mark*1*3
•Viscosity SAE 5W-30
Without oil filter change 4-7/8 qt4 qt 4.6
Cooling system (VQ37VHR) Automatic transmission
model With reservoir
9 qt7-1/2 qt 8.5 Pre-diluted Genuine NISSAN Long Life Antifreeze/Coolant (blue) or equiva-
lent
Reservoir 7/8 qt3/4 qt 0.8
Manual transmission
model With reservoir
9-1/8 qt7-5/8 qt 8.6
Reservoir 7/8 qt3/4 qt 0.8
Cooling system (VQ25HR) AWD With reservoir9-1/4 qt7-3/4 qt 8.8
Reservoir 7/8 qt3/4 qt 0.8
2WD With reservoir8-3/4 qt7-1/4 qt 8.3
Reservoir 7/8 qt3/4 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*5
Differential gear oil ——— For 7A/T 2WD models:
API GL-5 Synthetic Gear Oil Viscosity SAE 75W-90*7All other models:
Genuine NISSAN Differential Oil Hypoid Super GL-5 80W-90 or API GL-5,
Viscosity SAE 80W-90*6
Transfer fluid ——— Genuine NISSAN Matic J ATF*8
Power steering fluid (PSF) Refill to the proper oil level according to the in-
structions in the “8. Maintenance and do-it-
yourself” section. Genuine NISSAN PSF or equivalent*9
Brake and clutch fluid Genuine NISSAN Super Heavy Duty Brake Fluid*10 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)*11
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
CAPACITIES AND RECOMMENDED
FUEL/LUBRICANTS
9-2Technical and consumer information