2018 INFINITI Q50 engine coolant

The following descriptions are provided to
give you a better understanding of the
scheduled maintenance items that should
be regularly checked or replaced. The main-
tenance schedule indicates at which mile-
age/time intervals each item requires
service.
In addition to scheduled maintenance, your
vehicle requires that some items be checked
during normal day-to-day operation. Refer
to “General maintenance” (P.9-2).
Items marked with “*” are recommended by
INFINITI for reliable vehicle operation. You
are not required to perform maintenance on
these items in order to maintain the warran-
ties which come with your vehicle. Other
maintenance items and intervals are re-
quired.
When applicable, additional information can
be found in the “8. Do-it yourself” section of
this manual.
NOTE:
INFINITI does not advocate the use of non-
OEM approved aftermarket flushing sys-
tems and strongly advises against perform-
ing these services on an INFINITI product.
Many of the aftermarket flushing systems
use non-OEM approved chemicals or sol-
vents, the use of which has not been
validated by INFINITI.For recommended fuel, lubricants, fluids,
grease, and refrigerant, refer to “Capacities
and recommended fluids/lubricants” (P.10-
2) of this manual.
EMISSION CONTROL SYSTEM
MAINTENANCE
Drive belts*:
Check engine drive belts for wear, fraying or
cracking and for proper tension. Replace any
damaged drive belts.
Engine air filter:
Replace at specified intervals. When driving
for prolonged periods in dusty conditions,
check/replace the filter more frequently.
Engine coolant* (for VR30DDTT engine
models):
Replace coolant at the specified interval.
When adding or replacing coolant, be sure to
use only Genuine NISSAN Long Life Anti-
freeze/Coolant (blue) or equivalent with the
proper mixture. (Refer to “Engine cooling
system (for VR30DDTT engine models)”
(P.8-6) to determine the proper mixture for
your area.)
NOTE:
Mixing any other type of coolant or the use
of non-distilled water may reduce the
recommended service interval of the cool-
ant.Engine coolant* (for 2.0L turbo gasoline
engine models):
Replace coolant at the specified interval.
When adding or replacing coolant, be sure to
use only BASF Glysantin® G48® or equiva-
lent with the proper mixture. (Refer to
“Engine cooling system (for 2.0L turbo
gasoline engine models)” (P.8-8) to deter-
mine the proper mixture for your area.)
NOTE:
Mixing any other type of coolant or the use
of non-distilled water may reduce the
recommended service interval of the cool-
ant.
Intercooler coolant (for VR30DDTT engine
models):
Intercooler coolant is maintenance-free.
Engine oil and oil filter:
Replace engine oil and oil filter at the
specified intervals. For recommended oil
grade and viscosity refer to “Capacities and
recommended fluids/lubricants” (P.10-2).
Engine valve clearance*:
Inspect only if valve noise increases. Adjust
valve clearance if necessary.
Evaporative emissions control vapor lines*:
Check vapor lines for leaks or looseness.
Tighten connections or replace parts as
necessary.
Maintenance and schedules9-5
EXPLANATION OF SCHEDULED
MAINTENANCE ITEMS

9-8Maintenance and schedules
EMISSION CONTROL SYSTEM MAINTENANCE (for VR30DDTT engine)
Abbreviations: I = Inspect and correct or replace as necessary, R = Replace
MAINTENANCE OP-
ERATION
Perform at number of
miles, kilometers or
months, whichever
comes first.Miles × 1,000
(km × 1,000) Months MAINTENANCE INTERVAL
5
(8) 6 10
(16) 12 15
(24) 18 20
(32) 24 25
(40) 30 30
(48) 36 35
(56) 42 40
(64) 48 45
(72) 54 50
(80) 60 55
(88) 66 60
(96) 72
Drive belts See NOTE (1) I*I* I*
Air cleaner filter See NOTE (2) RR
EVAP vapor lines I*I* I*
Fuel lines I*I* I*
Fuel filter See NOTE (3)
Engine coolant* See NOTE (4) (5)
Engine oil See NOTE (6) RR RR R R
Engine oil filter See NOTE (6) RR RR R R
Spark plugs See NOTE (7) Replace every 105,000 miles (168,000 km)
Intake and exhaust valve
clearance* See NOTE (8)

MAINTENANCE OP-
ERATION
Perform at number of
miles, kilometers or
months, whichever
comes first.Miles × 1,000
(km × 1,000) Months MAINTENANCE INTERVAL
65
(104) 78 70
(112) 84 75
(120) 90 80
(128) 96 85
(136) 102 90
(144) 108 95
(152) 114 100
(160) 120 105
(168) 126 110
(176) 132 115
(184) 138 120
(192) 144
Drive belts See NOTE (1) I*I*I*I* I* I*
Air cleaner filter See NOTE (2) RR
EVAP vapor lines I*I* I*
Fuel lines I*I* I*
Fuel filter See NOTE (3)
Engine coolant* See NOTE (4) (5)
Engine oil See NOTE (6) RRRR R R
Engine oil filter See NOTE (6) RRRR R R
Spark plugs See NOTE (7) Replace every 105,000 miles (168,000 km)
Intake and exhaust valve
clearance* See NOTE (8)
NOTE:
(1) After 40,000 miles (64,000 km) or 48
months, inspect every 10,000 miles
(16,000 km) or 12 months. Replace the
drive belts if found damaged.
(2) If operating mainly in dusty conditions,
more frequent maintenance may be re-
quired.
(3) Periodic maintenance is not required.
(4) First replacement interval is 105,000
miles (168,000 km) or 84 months. After first replacement, replace every 75,000
miles (120,000 km) or 60 months.
(5) Use only Genuine NISSAN Long Life
Antifreeze/Coolant (blue) or equivalent
with proper mixture ratio of 50% anti-
freeze and 50% demineralized or distilled
water. Mixing any other type of coolant or
the use of non-distilled water may reduce
the life expectancy of the factory fill cool-
ant.
(6) If the oil replacement indicator is
displayed, change the engine oil and filteras soon as possible. After replacing the
engine oil, reset the display.
(7) Replace spark plug when the plug gap
exceeds 0.043 in (1.1 mm) even if within
specified replacement mileage.
(8) Periodic maintenance is not required.
However, if valve noise increases, inspect
valve clearance.
*: Maintenance items and intervals with “*”
are recommended by INFINITI for reliable
vehicle operation. The owner need not to
Maintenance and schedules9-9

EMISSION CONTROL SYSTEM MAINTENANCE (for 2.0L turbo gasoline engine)
Abbreviations: I = Inspect and correct or replace as necessary, R = Replace
MAINTENANCE OP-
ERATION
Perform at number of
miles, kilometers or
months, whichever
comes first.Miles × 1,000
(km × 1,000) Months MAINTENANCE INTERVAL
5
(8) 6 10
(16) 12 15
(24) 18 20
(32) 24 25
(40) 30 30
(48) 36 35
(56) 42 40
(64) 48 45
(72) 54 50
(80) 60 55
(88) 66 60
(96) 72
Engine compartment See NOTE (1) II I
V-belt See NOTE (2) I*I* I*
Air cleaner filter Replace every 45,000 miles (72,000 km) or 36 months
Fuel lines I*I* I*
Fuel filter See NOTE (3)
Engine coolant* Replace every 120,000 miles (192,000 km) or 120 months
Engine oil RR RR R R
Engine oil filter RR RR R R
Spark plugs Replace every 45,000 miles (72,000 km) or 36 months
Maintenance and schedules9-11

9-12Maintenance and schedules
MAINTENANCE OP-
ERATION
Perform at number of
miles, kilometers or
months, whichever
comes first.Miles × 1,000
(km × 1,000) Months MAINTENANCE INTERVAL
65
(104) 78 70
(112) 84 75
(120) 90 80
(128) 96 85
(136) 102 90
(144) 108 95
(152) 114 100
(160) 120 105
(168) 126 110
(176) 132 115
(184) 138 120
(192) 144
Engine compartment See NOTE (1) II I
V-belt See NOTE (2) I*I* I*
Air cleaner filter Replace every 45,000 miles (72,000 km) or 36 months
Fuel lines I*I* I*
Fuel filter See NOTE (3)
Engine coolant* Replace every 120,000 miles (192,000 km) or 120 months
Engine oil RRRR R R
Engine oil filter RRRR R R
Spark plugs Replace every 45,000 miles (72,000 km) or 36 months
NOTE:
(1) All visible parts checked for leaks and
damage.
(2) In visible area only.
(3) Periodic maintenance is not required.
*: Maintenance items and intervals with “*”
are recommended by INFINITI for reliable
vehicle operation. The owner need not to
perform such maintenance in order to
maintain the emission warranty or manu-
facturer recall liability. Other maintenance
items and intervals are required.

10-2Technical 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. Do-it-yourself” section to determine the proper refill capacity.
Fluid typeCapacity (approximate)
Recommended Fluids/Lubricants
Metric
Measure US
Measure Imperial
Measure
Fuel 76 L 20 gal 16-5/8 galÂ
See “Fuel information (for VR30DDTT engine model)” (P.10-4) or
“Fuel information (for 2.0L turbo gasoline engine model)” (P.10-6).
Engine oil
*1Drain and refill*1: For additional informa-
tion, see “Engine oil” (P.8-
10). VR30DDTT en-
gine model
Two-Wheel
Drive (2WD)
modelWith oil filter
change
4.8 L 5-1/8 qt 4-1/4 qt Â
Genuine “Nissan Motor Oil 0W-20 SN” is recommended.
 If the above motor oil is not available, use an equivalent motor oil
that matches the above grade and viscosity. For additional
information, see “Engine oil and oil filter recommendation” (P.10-8).
Without oil fil-
ter change
4.6 L 4-7/8 qt 4 qt
All-Wheel
Drive (AWD)
model With oil filter
change
5.4 L 5-3/4 qt 4-3/4 qt
Without oil fil-
ter change 5.2 L 5-1/2 qt 4-5/8 qt
2.0L turbo ga-
soline engine
model Two-Wheel
Drive (2WD)
modelWith oil filter
change
6.3 L 6-5/8 qt 5-1/2 qt Â
Engine oil meeting specification MB229.5, viscosity SAE 0W-30 or
equivalent.
 As an alternative to this recommended oil, engine oils meeting
specification MB229.5, viscosity SAE 0W-40, 5W-30 and 5W-40
may be used and meet all specifications and requirements necessary
to maintain the new vehicle limited warranty.
 For additional information, refer to “Selecting the correct oil” (P.10-
9) and “Oil viscosity” (P.10-9) under “Engine oil and oil filter
recommendation” (P.10-8) of this manual.
Without oil fil-
ter change
5.8 L 6-1/8 qt 5-1/8 qt
All-Wheel
Drive (AWD)
model With oil filter
change
6.6 L
7 qt 5-7/8 qt
Without oil fil-
ter change 6.1 L 6-1/2 qt 5-3/8 qt
Engine coolant VR30DDTT en-
gine model Total (with reservoir)
Standard and premium grade
8.8 L 9-1/4 qt 7-3/4 qt Â
Pre-diluted Genuine NISSAN Long Life Antifreeze/Coolant (blue)
or equivalent
Total (with reservoir)
Sport grade 10.3 L 10-7/8 qt 9-1/8 qt
Reservoir 0.6 L 5/8 qt 1/2 qt
2.0L turbo ga-
soline engine
model Total (with reservoir)
9.0 L 9-1/2 qt 7-7/8 qt Â
BASF Glysantin® G48®
 Use BASF Glysantin® G48® or equivalent in its quality. Any
damage to the vehicle or within the engine cooling system caused
by the use of engine coolant other than as recommended is not
covered under the INFINITI’s new vehicle limited warranty.
Reservoir 0.9 L1 qt 3/4 qt
Intercooler coolant Total (with reservoir)3.2 L 3-3/8 qt 2-7/8 qt ÂPre-diluted Genuine NISSAN Long Life Antifreeze/Coolant (blue)
or equivalent
Reservoir 0.4 L 3/8 qt 3/8 qt
CAPACITIES AND RECOMMENDED
FLUIDS/LUBRICANTS

11 Index
A
ABS (Anti-lock Braking System) ................... 5-131
Active Lane Control ............................................ 5-26
Active noise cancellation ................................ 5-144
Active sound enhancement ........................... 5-144
Active trace control .......................................... 5-134
Air bag systemFront-seat mounted side-impact
supplemental air bag system ..................... 1-56
Roof-mounted curtain side-impact
supplemental air bag system ..................... 1-56
Air bag warning labels ....................................... 1-59
Air bag warning light ............................... 1-59, 2-15
Air cleaner housing filter ................................... 8-21
Air conditioner
Air conditioner specification label ......... 10-16
Air conditioning system refrigerant and
lubricant recommendations ..................... 10-10
Air deflectors ..................................................... 10-18
Alarm How to stop alarm (see vehicle
security system) ............................................. 2-31
Alcohol, drugs and driving ................................ 5-10
Antenna .................................................................... 4-3
Anti-lock Braking System (ABS) ................... 5-131
Appearance care
Exterior appearance care ............................... 7-2
Interior appearance care ................................ 7-5
Armrest ...................................................................... 1-7 Ashtray ................................................................... 2-46
Audible reminders ................................................ 2-18
Autolight system .................................................. 2-36
Automatic
Automatic Transmission Fluid (ATF) ....... 8-13
Driving with automatic transmission ....... 5-16
Automatic door locks ............................................ 3-6
Automatic drive positioner ............................... 3-33
Automatic seat positioner ................................ 3-33
Avoiding collision and rollover ............................ 5-9
B
Back-up Collision Intervention (BCI) .............. 5-61
Battery .................................................................... 8-16 Battery replacement, Intelligent Key ......... 3-2
Battery saver system .................................... 2-39
Intelligent Key ................................................. 8-26
Variable voltage control system ............... 8-19
Before starting the engine ................................ 5-14
Belts (See drive belts) ......................................... 8-19
Blind Spot Intervention® (BSI) ........................ 5-49
Blind Spot Warning (BSW) ............................... 5-41
Brake
Anti-lock Braking System (ABS) ............. 5-131
Brake fluid ....................................................... 8-14
Brake force distribution ............................. 5-133
Brake system ............................................... 5-130
Parking brake operation .............................. 5-21
Brake warning light .............................................. 2-11 Break-in schedule .............................................. 5-122
Bulb check/instrument panel ........................... 2-10
Bulb replacement ................................................. 8-28
C
Capacities and
recommended fluids/lubricants ....................... 10-2
Car phone or CB radio ......................................... 4-3
Card holder ............................................................ 2-49
Catalytic converter
Three-way catalyst ......................................... 5-5
Changing intercooler coolant ........................... 8-10
Chassis and body maintenance ....................... 9-13
Chassis control ................................................... 5-136
Check tire pressure warning ............................. 2-22
Checking intercooler coolant level .................. 8-10
Child restraints ..................................................... 1-23 LATCH system ............................................... 1-26
Precautions on child restraints .................. 1-24
Child safety ............................................................ 1-21
Child safety rear door lock .................................. 3-6
Chimes Audible reminders .......................................... 2-18
Seat belt warning light and chime ............ 2-15
Circuit breaker
Fusible link ...................................................... 8-24
Cleaning exterior and interior .................... 7-2, 7-5
Clock ...................................................................... 2-29
Coat hooks ............................................................ 2-49

11-2
Cockpit ...................................................................... 2-3
Cold weather driving ........................................ 5-141
Compact spare tire ............................................ 8-44
Console box ........................................................... 2-48
CoolantCapacities and
recommended fluids/lubricants ................. 10-2
Changing engine coolant ...................... 8-7, 8-9
Checking engine coolant level ............. 8-7, 8-8
Corrosion protection ............................................. 7-7
Courtesy light ....................................................... 2-57
Cruise control ........................................................ 5-71 Fixed speed cruise control (on
ICC system) .................................................... 5-90
Intelligent Cruise Control (ICC) ................. 5-73
Cruise indicator .................................................... 2-23
Cup holders ........................................................... 2-46
Current fuel consumption ................................. 2-28
D
Daytime running light system .......................... 2-39
Defroster switch
Rear window and outside mirror
defroster switch ............................................. 2-35
Dimensions .......................................................... 10-13
Direct Adaptive Steering ................................. 5-128
Distance Control Assist (DCA) ........................ 5-94
Distance to empty ............................................... 2-27
Drive belts .............................................................. 8-19
Drive positioner .................................................... 3-33
Driver assist system indicator .......................... 2-24 Driving
Cold weather driving .................................. 5-141
Driving with automatic transmission ....... 5-16
Precautions when starting and driving ..... 5-4
E
ECO drive indicator light ................................... 2-16
ECO mode ............................................................. 5-23
ECO pedal system ............................................... 5-23
Economy Fuel .................................................................. 5-123
Elapsed time ......................................................... 2-27
Elapsed time and trip odometer ..................... 2-27
Emission control information label ............... 10-16
Emission control system maintenance ............ 9-8
Emission control system warranty .............. 10-23
Engine Before starting the engine .......................... 5-14
Break-in schedule ........................................ 5-122
Capacities and
recommended fluids/lubricants ................. 10-2
Changing engine coolant ...................... 8-7, 8-9
Changing engine oil and filter .................... 8-11
Checking engine coolant level ............. 8-7, 8-8
Checking engine oil level ............................. 8-11
Coolant temperature gauge ......................... 2-8
Emergency engine shut off ......................... 5-13
Engine block heater ................................... 5-142
Engine compartment check locations ........ 8-4
Engine cooling system ................................... 8-6
Engine oil ........................................................ 8-10 Engine oil and filter
replacement indicator ................................... 2-25
Engine oil and oil
filter recommendation ................................. 10-8
Engine serial number ................................. 10-15
Engine specifications .................................. 10-11
Engine start operation indicator ............... 2-21
If your vehicle overheats ............................. 6-16
Remote engine start .................................... 3-20
Remote engine start
operation indicator ........................................ 2-21
Starting the engine ....................................... 5-15
Engine coolant temperature gauge .................. 2-8
Entry/exit function Automatic drive positioner ......................... 3-33
Event Data Recorders (EDR) ........................ 10-25
Exhaust gas (carbon monoxide) ........................ 5-4
Explanation of scheduled
maintenance items ................................................. 9-5
F
F.M.V.S.S./C.M.V.S.S. certification label .... 10-15
Filter Air cleaner housing filter ............................. 8-21
Changing engine oil and filter .................... 8-11
Flashers (See hazard warning
flasher switch) ......................................................... 6-2
Flat tire ...................................................................... 6-3
Flat Tire - Visit dealer warning ....................... 2-22
Flat towing ......................................................... 10-22
Floor mat cleaning ................................................. 7-5