2014 INFINITI Q50 engine

8-20Maintenance and do-it-yourself
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 wind-
shield.
Clean the outside of the windshield with a
washer solution or a mild detergent. Your
windshield 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
detergent. 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.
When a washer nozzle is clogged
See an INFINITI retailer if a washer nozzle is
clogged or any malfunction occurs. Do not
attempt to clean the nozzle using a needle
or a pin. Doing so may damage the nozzle.
SDI2048
REPLACING
Replace the wiper blades if they are worn.
Before replacing the wiper blades, the
wiper should be in the fully up position
to avoid scratching the engine hood or
damaging the wiper arm. To pull up the
wiper arm, see“Windshield wiper and
washer switch” (P.2-33).
1. Pull the wiper arm.
2. Push the release tab
*A, and then
move the wiper blade down the wiper
arm
*1while pushing the release tab
to remove. 3. Insert the new wiper blade onto the
wiper arm until a click sounds.
4. Rotate the wiper blade so the dimple is in the groove.
CAUTION
. After wiper blade replacement, return
the wiper arm to its original position;
otherwise it may be damaged when the
hood is opened.
. Make sure the wiper blades contact the
glass; otherwise the arm may be da-
WINDSHIELD WIPER BLADES

8-22Maintenance and do-it-yourself
JVM0255X
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 tothe OFF or LOCK position and the
headlight switch is turned to OFF. 2. Open the engine hood.
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
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

9 Technical and consumer information
Capacities and recommended fuel/lubricants....... 9-2Fuel information .............................................. 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 ................................................... 9-10
When traveling or registering your vehicle in
another country ................................................. 9-11
Vehicle identification ......................................... 9-11 Vehicle Identification Number (VIN) plate ....... 9-11
Vehicle identification number
(chassis number) ........................................... 9-11
Engine serial number .................................... 9-12
F.M.V.S.S./C.M.V.S.S. certification label .......... 9-12
Emission control information label ................ 9-12
Tire and loading information label ................. 9-13
Air conditioner specification label.................. 9-13 Installing front license plate .............................. 9-14
Removing air deflectors..................................... 9-15
Vehicle loading information............................... 9-16
Terms .......................................................... 9-16
Vehicle load capacity ................................... 9-17
Loading tips................................................. 9-18
Measurement of weights.............................. 9-18
Towing a trailer ................................................. 9-19 Flat towing................................................... 9-19
Uniform tire quality grading .............................. 9-19
Treadwear .................................................... 9-19
Traction AA, A, B and C................................ 9-20
Temperature A, B and C ............................... 9-20
Emission control system warranty ..................... 9-20
Reporting safety defects.................................... 9-21
Readiness for Inspection/Maintenance (I/M) test
(US only)........................................................... 9-22
Event Data Recorders (EDR) ............................... 9-23
Owner’s Manual/Service Manual
order information .............................................. 9-23

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 information” (P.9-4).
Engine oil*2
Drain and refill
With oil filter change 5-1/8 qt
4-3/8 qt 4.9
.Genuine NISSAN engine oil or equivalent*1
. Engine oil with API Certification Mark*10
. Viscosity SAE 5W-30
Without oil filter change 4-7/8 qt
4.0 qt 4.6
Cooling system With reservoir 11-1/2 qt
9-5/8 qt 10.9
Pre-diluted Genuine NISSAN Long Life Antifreeze/Coolant (blue) or equivalent
Reservoir 1 qt
3/4 qt 0.9
Automatic transmission fluid ———Genuine NISSAN Matic S ATF*3
Differential gear oil ———Front:
Genuine NISSAN Differential Oil Hypoid Super GL-5 80W-90 or API GL-5, Viscosity SAE
80W-90*4
Rear:
API GL-5 Synthetic gear oil, Viscosity SAE 75W-90*5
Transfer fluid ———Genuine NISSAN Matic J ATF*6
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*7
Brake fluid Genuine NISSAN Super Heavy Duty Brake Fluid*8 or equivalent DOT 3
Multi-purpose grease ———
NLGI No. 2 (Lithium soap base)
Air conditioning system refrigerant ———HFC-134a (R-134a)*9
Air conditioning system lubricants ———NISSAN A/C System Oil SP-10 or exact equivalent
Window washer fluid ———Genuine NISSAN Windshield Washer Concentrate Cleaner & Antifreeze or equivalent
*1:
INFINITI recommends Genuine NISSAN Ester Engine Oil available at your INFINITI retailer.*2:For additional information, see “Engine oil”(P.8-10) for changing engine oil.*3: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.
*4:For hot climates, viscosity SAE 90 is suitable for ambient temperatures above 328F(0 8C).*5:See an INFINITI retailer for service for synthetic oil.
CAPACITIES AND RECOMMENDED FUEL/
LUBRICANTS

*6: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.
*7:DEXRONTMVI type ATF may also be used.*8:Available in mainland U.S.A. through an INFINITI retailer.*9:For additional information, see“Vehicle identification”(P.9-11) for air conditioner specification label.*10:For additional information, see “Engine oil and oil filter recommendation” (P.9-6).
Technical and consumer information9-3

15%.)
. E-15 fuel contains more than 10%
oxygenate. E-15 fuel will adversely
affect the emission control devices
and systems of the vehicle and should
not be used. Damage caused by such
fuel is not covered by the INFINITI New
Vehicle Limited Warranty.
. 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-15 fuel
E-15 fuel is a mixture of approximately
15% fuel ethanol and 85% unleaded
gasoline. E-15 can only be used in vehicles
designed to run on E-15 fuel. Do not use E-
15 in your vehicle. U.S. government
regulations require fuel ethanol dispensing
pumps to be identified with small, square,
orange and black label with the common
abbreviation or the appropriate percentage
for that region.
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
Technical and consumer information9-5

9-6Technical and consumer information
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.
JVT0159X
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 SP-10
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