engine oil INFINITI G-COUPE 2012 User Guide

5-46Starting and driving
If any malfunction occurs in the AWD
system while the engine is running, the
warning light will come on.
The warning light may blink rapidly (about
twice per second) while trying to free a
stuck vehicle due to high power train oil
temperature. The driving mode may change
to two-wheel drive. If the warning light
blinks rapidly during operation, stop the
vehicle with the engine idling in a safe
place immediately. Then if the light goes
off after a while, you can continue driving.
A large difference between the diameters
of front and rear wheels will make the
warning light blink slowly (about once per
two seconds). Pull off the road in a safe
area, and idle the engine. Check that all
tire sizes are the same, tire pressure is
correct and tires are not worn.
If the warning light is blinking after the
above operation, have your vehicle
checked by an INFINITI retailer as soon as
possible.
WARNING
.For AWD equipped vehicles, do not
attempt to raise two wheels off the ground and shift the transmission to
any drive or reverse position with the
engine running. Doing so may result in
drivetrain damage or unexpected vehicle
movement which could result in serious
vehicle damage or personal injury.
. Do not attempt to test an AWD equipped
vehicle on a 2-wheel dynamometer (such
as the dynamometers used by some
states for emissions testing) or similar
equipment even if the other two wheels
are raised off the ground. Make sure that
you inform the test facility personnel
that your vehicle is equipped with AWD
before it is placed on a dynamometer.
Using the wrong test equipment may
result in drivetrain damage or unex-
pected vehicle movement which could
result in serious vehicle damage or
personal injury.
CAUTION
.Do not operate the engine on a free
roller when any of the wheels are raised.
. If the warning light comes on while
driving there may be a malfunction in the AWD system. Reduce the vehicle
speed and have your vehicle checked by
an INFINITI retailer as soon as possible.
. If the warning light remains on after the
above operation, have your vehicle
checked by an INFINITI retailer as soon
as possible.
. The power train may be damaged if you
continue driving with the warning light
blinking.

8 Maintenance and do-it-yourself
Maintenance requirement.................................... 8-3
Scheduled maintenance .................................. 8-3
General maintenance....................................... 8-3
Where to go for service ................................... 8-3
General maintenance ........................................... 8-4 Explanation of maintenance items ................... 8-4
Maintenance precautions ..................................... 8-6
Engine compartment check locations ................... 8-8 VQ25HR/VQ37VHR engine ............................... 8-8
Engine cooling system ......................................... 8-9
Checking engine coolant level ....................... 8-10
Changing engine coolant ............................... 8-10
Engine oil .......................................................... 8-11
Checking engine oil level............................... 8-11
Changing engine oil and filter ....................... 8-11
Automatic transmission fluid ............................. 8-14
Power steering fluid........................................... 8-14
Brake and clutch fluid ....................................... 8-15 Brake fluid .................................................... 8-15
Clutch fluid (if so equipped) .......................... 8-15
Window washer fluid ......................................... 8-16 Battery .............................................................. 8-17
Coupe .......................................................... 8-17
Sedan and coupe......................................... 8-17
Jump starting ............................................... 8-18
Variable voltage control system......................... 8-19
Drive belts ........................................................ 8-19
Spark plugs ...................................................... 8-20 Replacing spark plugs ................................. 8-20
Air cleaner ........................................................ 8-21
Windshield wiper blades ................................... 8-22
Cleaning ...................................................... 8-22
Replacing..................................................... 8-22
Brakes .............................................................. 8-23
Self-adjusting brakes ................................... 8-23
Brake pad wear warning .............................. 8-23
Fuses ................................................................ 8-24
Engine compartment .................................... 8-24
Passenger compartment............................... 8-25
Intelligent Key battery replacement ................... 8-26

Accelerator pedal:Check the pedal for
smooth operation and make sure the pedal
does not catch or require uneven effort.
Keep the floor mat away from the pedal.
Automatic transmission P (Park) mechan-
ism: On a fairly steep hill, check that your
vehicle is held securely with the selector
lever in the P (Park) position without
applying any brakes.
Brake pedal: Check the pedal for smooth
operation. If the brake pedal suddenly
goes down further than normal, the pedal
feels spongy or the vehicle seems to take
longer to stop, see an INFINITI retailer
immediately. Keep the floor mat away from
the pedal.
Brakes: Check that the brakes do not pull
the vehicle to one side when applied.
Parking brake: Check the parking brake
operation regularly. The vehicle should be
securely held on a fairly steep hill with only
the parking brake applied. If the parking
brake needs adjusted, see an INFINITI
retailer.
Seat belts: Check that all parts of the seat
belt system (for example, buckles, an-
chors, adjuster and retractors) operate
properly and smoothly, and are installed securely. Check the belt webbing for cuts,
fraying, wear or damage.
Seats:
Check seat position controls such as
seat adjusters, seatback recliner, etc. to
ensure they operate smoothly and that all
latches lock securely in every position.
Check that the head restraints move up
and down smoothly and that the locks (if
so equipped) hold securely in all latched
positions.
Steering wheel: Check for changes in the
steering conditions, such as excessive free
play, hard steering or strange noises.
Warning lights and chimes: Make sure that
all warning lights and chimes are operating
properly.
Windshield defroster: Check that the air
comes out of the defroster outlets properly
and in sufficient quantity when operating
the heater or air conditioner.
Windshield wiper and washer*: Check that
the wipers and washer operate properly
and that the wipers do not streak.
Under the hood and vehicle
The maintenance items listed here should
be checked periodically (for example, each
time you check the engine oil or refuel). Battery*:
Check the fluid level in each cell.
It should be between the MAX and MIN
lines. Vehicles operated in high tempera-
tures or under severe condition require
frequent checks of the battery fluid level.
Brake fluid level*: Make sure that the
brake fluid level is between the MAX and
MIN lines on the reservoir.
Engine coolant level*: Check the coolant
level when the engine is cold.
Engine drive belts*: Make sure that no belt
is frayed, worn, cracked or oily.
Engine oil level*: Check the level after
parking the vehicle on a level spot and
turning off the engine. Wait more than 15
minutes for the oil to drain back into the oil
pan.
Exhaust system: Make sure there are no
loose supports, cracks or holes. If the
sound of the exhaust seems unusual or
there is a smell of exhaust fumes, im-
mediately have the exhaust system in-
spected by an INFINITI retailer. (See
“Precautions when starting and driving”
(P.5-3) for exhaust gas (Carbon monoxide).)
Fluid leaks: Check under the vehicle for
fuel, oil, water or other fluid leaks after the
vehicle has been parked for a while. Water
Maintenance and do-it-yourself8-5

.The fuel filter or fuel lines should be
serviced by an INFINITI retailer because
the fuel lines are under high pressure
even when the engine is off.
CAUTION
.Do not work under the hood while the
engine is hot. Turn the engine off and
wait until it cools down.
. Avoid direct contact with used engine oil
and coolant. Improperly disposed engine
oil, coolant, and/or other vehicle fluids
can damage the environment. Always
conform to local regulations for disposal
of vehicle fluid.
This “8. Maintenance and do-it-yourself”
section gives instructions regarding only
those items which are relatively easy for an
owner to perform.
A genuine INFINITI Service Manual is also
available. (See “Owner’s Manual/Service
Manual order information” (P.9-28).)
You should be aware that incomplete or
improper servicing may result in operating
difficulties or excessive emissions, and could affect your warranty coverage.
If in
doubt about any servicing, we recommend
that it be done by an INFINITI retailer.
Maintenance and do-it-yourself8-7

8-8Maintenance and do-it-yourself
SDI2709
VQ25HR/VQ37VHR ENGINE
1. Fuse/fusible link holder
2. Battery
3. Engine oil filler cap
4. Brake fluid reservoir
5. Clutch fluid reservoir (Manual Trans-mission models)
6. Window washer fluid reservoir
7. Power steering fluid reservoir
8. Air cleaner
9. Radiator filler cap 10. Drive belts
11. Engine coolant reservoir
12. Engine oil dipstick (for VQ37VHR
engine model)
13. Engine oil dipstick (for VQ25HR en- gine model)
ENGINE COMPARTMENT CHECK LOCATIONS

SDI2505
VQ25HR engine
SDI2045
VQ37VHR engine
CHECKING ENGINE OIL LEVEL
1. Park the vehicle on a level surface andapply the parking brake.
2. Run the engine until it reaches operat- ing temperature.
3. Turn off the engine. Wait more than 15
minutes for the oil to drain back into
the oil pan.
4. Remove the dipstick and wipe it clean. Reinsert it all the way.
5. Remove the dipstick again and check the oil level. It should be within the
range
*1. If the oil level is below*2,
remove the oil filler cap and pour
recommended oil through the opening.
Do not overfill
*3.
6. Recheck oil level with the dipstick.
It is normal to add some oil between oil
maintenance intervals or during the break-
in period, depending on the severity of
operating conditions.
CAUTION
Oil level should be checked regularly.
Operating the engine with an insufficient
amount of oil can damage the engine, and such damage is not covered by warranty.
CHANGING ENGINE OIL AND FILTER
Vehicle set-up
1. Park the vehicle on a level surface and
apply the parking brake.
2. Run the engine until it reaches operat- ing temperature.
3. Turn the engine off and wait more than 15 minutes.
4. Raise and support the vehicle using a suitable floor jack and safety jack
stands.
.Place the safety jack stands under
the vehicle jack-up points.
.A suitable adapter should be at-tached to the jack stand saddle.
5. Remove the plastic engine undercover. a. Remove the small plastic clip at thecenter point of the undercover.
b. Then remove the other bolts that hold the undercover in place.
Maintenance and do-it-yourself8-11
ENGINE OIL

8-12Maintenance and do-it-yourself
CAUTION
Make sure the correct lifting and support
points are used to avoid vehicle damage.
SDI2335
Two-wheel drive (2WD) models (VQ25HR/VQ37VHR engine)
Engine oil and filter
1. Place a large drain pan under the drain
plug.
2. Remove the oil filler cap.
3. Remove the drain plug
*1with a
wrench and completely drain the oil.
CAUTION
Be careful not to burn yourself, as the
engine oil is hot.
SDI2047
All-wheel drive (AWD) models (VQ25HR/ VQ37VHR engine)
.Waste oil must be disposed of
properly.
.Check your local regulations.
4. (Perform steps 4 to 7 only when the engine oil filter change is needed.)
Loosen the oil filter
*2with an oil filter
wrench. Remove the oil filter by turning
it by hand.
5. Wipe the engine oil filter mounting surface with a clean rag.

CAUTION
Be sure to remove any old rubber gasket
remaining on the mounting surface of the
engine. Failure to do so could lead to engine
damage.
6. Coat the gasket on the new filter withclean engine oil.
7. Screw in the oil filter clockwise until a slight resistance is felt, then tighten
additionally more than 2/3 turn.
Oil filter tightening torque:11 to 15 ft-lb
(14.7 to 20.5 N·m)
8. Clean and re-install the drain plug with a new washer. Securely tighten the
drain plug with a wrench.
Drain plug tightening torque:22 to 29 ft-lb
(29 to 39 N·m)
Do not use excessive force.
9. Refill engine with recommended oil and install the oil filler cap securely.
See “Capacities and recommended
fuel/lubricants” (P.9-2) for drain and refill capacity. The drain and refill
capacity depends on the oil tempera-
ture and drain time. Use these specifi-
cations for reference only. Always use
the dipstick to determine the proper
amount of oil in the engine.
10. Start the engine and check for leakage around the drain plug and the oil filter.
Correct as required.
11. Turn the engine off and wait more than 15 minutes. Check the oil level with the
dipstick. Add engine oil if necessary.
After the operation
1. Install the engine undercover intoposition as the following steps.
a. Pull the center of the small plastic
clip out.
b. Hold the engine undercover into position.
c. Insert the clip through the under- cover into the hole in the frame, then
push the center of the clip in to lock
the clip in place.
d. Install the other bolts that hold the undercover in place. Be careful not
to strip the bolts or over-tighten
them. 2. Lower the vehicle carefully to the
ground.
3. Dispose of waste oil and filter properly.
WARNING
. Prolonged and repeated contact with
used engine oil may cause skin cancer.
. Try to avoid direct skin contact with used
oil. If skin contact is made, wash
thoroughly with soap or hand cleaner
as soon as possible.
. Keep used engine oil out of reach of
children.
Maintenance and do-it-yourself8-13

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

9-2Technical and consumer information
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” (P.9-4).
Engine oil (VQ37VHR)*1
.Engine oil with API Certification Mark*2*3
. Viscosity SAE 5W-30
Drain and refill
With oil filter change 5-1/8 qt4-3/8 qt 4.9
Without oil filter change 4-7/8 qt4 qt4.6
Engine oil (VQ25HR)*1
Drain and refill With oil filter change 5 qt4-1/8 qt 4.7
Without oil filter change 4-5/8 qt3-7/8 qt 4.4
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 equivalent
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 reservoir
9-1/4 qt7-3/4 qt 8.8
Reservoir 7/8 qt3/4 qt 0.8
2WD With reservoir
8-3/4 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 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*7
CAPACITIES AND RECOMMENDED FUEL/
LUBRICANTS