2012 INFINITI G-COUPE Owners Manual

9-6Technical and consumer information
limited warranty.
. E-85 is a mixture of approximately 85%
fuel ethanol and 15% unleaded gasoline.
. U.S. government regulations require
ethanol dispensing pumps to be identi-
fied by a small, square, orange and black
label with the common abbreviation or
the appropriate percentage for that
region.
STI0505
1. API certification mark
2. API service symbol
ENGINE OIL AND OIL FILTER RE-
COMMENDATION
Selecting the correct oil
It is essential to choose the correct grade,
quality, and viscosity engine oil to ensure
satisfactory engine life and performance,
see “Capacities and recommended fuel/
lubricants” (P.9-2). INFINITI recommends
the use of an energy conserving oil in
order to improve fuel economy.
Select only engine oils that meet the American Petroleum Institute (API) certifi-
cation or International Lubricant Standar-
dization and Approval Committee (ILSAC)
certification and SAE viscosity standard.
These oils have the API certification mark
on the front of the container. Oils which do
not have the specified quality label should
not be used as they could cause engine
damage.
Oil additives
INFINITI does not recommend the use of oil
additives. The use of an oil additive is not
necessary when the proper oil type is used
and maintenance 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 that the engine oil viscosity
be selected based on the temperatures at
which the vehicle will be operated before
the next oil change. Choosing an oil
viscosity other than that recommended
could cause serious engine damage.
Selecting the correct oil filter
Your new vehicle is equipped with a high-
quality genuine NISSAN oil filter. When
replacing, use the genuine oil filter or its
equivalent for the reason described in
change intervals.
Change intervals
The oil and oil filter change intervals for
your engine are based on the use of the
specified quality oils and filters. Oil and
filter other than the specified quality, or oil
and filter change intervals longer than
recommended could reduce engine life.
Damage to engines caused by improper
maintenance or use of incorrect oil andfilter quality and/or viscosity is not covered
by the new INFINITI vehicle limited warran-
ties.
Your engine was filled with a high quality
engine oil when it was built. You do not
have to change the oil before the first
recommended change interval. Oil and
filter change intervals depend upon how
you use your vehicle. Operation under the
following conditions may require more
frequent oil and filter changes.
.
repeated short distance driving at cold
outside temperatures,
. driving in dusty conditions,
. extensive idling,
. stop and go “rush hour”traffic,
Refer to the “INFINITI Service and Main-
tenance Guide” for the maintenance sche-
dule.AIR CONDITIONING SYSTEM RE-
FRIGERANT AND LUBRICANT RE-
COMMENDATIONS
The air conditioning system in your
INFINITI vehicle must be charged with the
refrigerant HFC-134a (R-134a) and the
lubricant, NISSAN A/C system oil Type S
or the exact equivalents.
CAUTION
The use of any other refrigerant or lubricant
will cause severe damage to the air con-
ditioning system and will require the repla-
cement of all air conditioner system
components.
The refrigerant HFC-134a (R-134a) in your
INFINITI vehicle will not harm the earth’s
ozone layer. Although this refrigerant does
not affect the earth’s atmosphere, certain
governmental regulations require the re-
covery and recycling of any refrigerant
during automotive air conditioning system
service. Your INFINITI retailer has the
trained technicians and equipment needed
to recover and recycle your air conditioning
system refrigerant.
Contact an INFINITI retailer when servicing
your air conditioning system.
Technical and consumer information9-7

9-8Technical and consumer information
ENGINE
ModelVQ25HRVQ37VHR
Type Gasoline, 4-cycle Gasoline, 4-cycle
Cylinder arrangement 6-cylinder, V-slanted at 608 6-cylinder, V-slanted at 608
Bore 6Stroke in (mm) 3.346 62.886 (85.0 673.3) 3.760 63.385 (95.5 686.0)
Displacement cu in (cm
3) 152.31 (2,496) 225.54 (3,696)
Firing order 1-2-3-4-5-61-2-3-4-5-6
Idle speed rpm
No adjustment is necessary. No adjustment is necessary.
Ignition timing (B.T.D.C.) degree/
rpm
Spark plug Standard FXE22HR-11 FXE24HR-11
Spark plug gap (Normal) in (mm) 0.043 (1.1) 0.043 (1.1)
Camshaft operation Timing chainTiming chain
This spark ignition system complies with the Canadian standard ICES-002.
STI0425
VQ25HR/VQ37VHR engine
SPECIFICATIONS

WHEELS AND TIRES
Road wheel
Sedan:
TypeSize Offset in (mm)
Conventional 17
67-1/2J 1.77 (45)
18 67-1/2J 1.77 (45)
Front:
Rear: 18
67-1/2J
18 68-1/2J 1.77 (45)
1.97 (50)
Spare 17
64T
18 64T 1.18 (30)
0 (0)
Coupe:
Type
Size Offset in (mm)
Conventional 18
68J
19 68-1/2J 1.69 (43)
Front:
Rear: 19
68-1/2J
19 69J 1.69 (43)
1.77 (45)
Spare 17
64T
18 64T 1.18 (30)
0 (0)
Technical and consumer information9-9

9-10Technical and consumer information
Tire
Sedan:
TypeSize Pressure PSI (kPa) [Cold]
Conventional P225/55R17 95V
33 (230)
P225/50R18 94V
Front:
Rear: 225/50R18 95W
245/45R18 96W
Spare (T-type) T145/80D17 107M
T145/70R18 107M 60 (420)
Coupe:
Type
Size Pressure PSI (kPa) [Cold]
Conventional P225/50R18 94V
33 (230)
P225/45R19 92V 35 (240)
Front:
Rear: 225/45R19 92W
245/40R19 94W
35 (240)
Spare (T-type) T145/80D17 107M
T145/70R18 107M 60 (420)

DIMENSIONS
in (mm)
Sedan: Overall length (with front
license plate) 188.1 (4,779)
189.0 (4,800)*10
Overall length (without
front license plate) 187.9 (4,773)
189.0 (4,800)*10
Overall width 69.8 (1,773)
Overall height 57.2 (1,453)*1*2
57.8 (1,468)*4
Front tread 59.8 (1,520)
Rear tread 59.8 (1,520)*2
60.2 (1,530)*1*3*4
Wheelbase 112.2 (2,850)
Coupe: Overall length (with front
license plate) 183.2 (4,653)*8
183.8 (4,669)*9
185.2 (4,705)*11
Overall length (without
front license plate) 183.1 (4,650)*8
183.7 (4,665)*9
185.0 (4,700)*11
Overall width 71.8 (1,823)
Overall height 54.8 (1,390)*5
54.9 (1,393)*6
55.4 (1,406)*7
Front tread 60.8 (1,545)
Rear tread 61.4 (1,560)
Wheelbase 112.2 (2,850)
*1: Sedan/Two-Wheel Drive (2WD)/17-in
tire models
*2: Sedan/Two-Wheel Drive (2WD)/18-in tire models (FR: 225/50R18, RR:
245/45R18)
*3: Sedan/Two-Wheel Drive (2WD)/18-in tire models (FR, RR: 225/50R18)
*4: Sedan/All-Wheel Drive (AWD) models
*5: Coupe/Two-Wheel Drive (2WD)/18-in tire models
*6: Coupe/Two-Wheel Drive (2WD)/19-in tire models
*7: Coupe/All-Wheel Drive (AWD) models
*8: Coupe/Standard models
*9: Coupe/Sports models
*10: Sedan/Aerodynamic Package models
*11: C oupe/INFINITI Performance Line,
Aerodynamic Package models 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.
Technical and consumer information9-11
WHEN TRAVELING OR REGISTERING YOUR
VEHICLE IN ANOTHER COUNTRY

9-12Technical and consumer information
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.
STI0509
ENGINE SERIAL NUMBER
The number is stamped on the engine as
shown.
VEHICLE IDENTIFICATION

STI0493
Sedan
STI0707
Coupe
F.M.V.S.S./C.M.V.S.S. CERTIFICA-
TION LABEL
The Federal/Canadian Motor Vehicle Safety
Standards (F.M.V.S.S./C.M.V.S.S.) certifica-
tion label is affixed as shown. This label
contains valuable vehicle information, such
as: Gross Vehicle Weight Ratings (GVWR),
Gross Axle Weight Rating (GAWR), month
and year of manufacture, Vehicle Identifi-
cation Number (VIN), etc. Review it care-
fully.
STI0422
EMISSION CONTROL INFORMATION
LABEL
The emission control information label is
attached as shown.
Technical and consumer information9-13