2019 INFINITI QX50 Coolant change

CHECKING ENGINE COOLANT
LEVEL
Check the coolant levelin the reservoir when
the engine is cold. If the coolant level is below
the MIN level
B, add coolant to the MAX
level
A. If the reservoir is empty, check the
coolant level in the radiator when the engine
is cold. If there is insufficient coolant in the
radiator, fill the radiator with coolant up to
the filler opening and also add it to the reser-
voir up to the MAX level
A. This vehicle contains Genuine NISSAN Long
Life Antifreeze/Coolant (blue). The life ex-
pectancy of the factory-fill coolant is
105,000 miles (168,000 km) or 7 years.
Mixing any other type of coolant or the use of
non-distilled water will reduce the life expec-
tancy of the factory-fill coolant. For addi-
tional information, refer to the "Maintenance
and schedules" section of this manual.
If the cooling system frequently requires
coolant, have it checked. It is recommended
that you visit an INFINITI retailer for this
service.
For additional information on the location of
the engine coolant reservoir, refer to “Engine
compartment check locations” in this section.
CHANGING ENGINE COOLANT
An INFINITI retailer can change the engine
coolant. The service procedure can be found
in the INFINITI Service Manual.
Improper servicing can result in reduced
heater performance and engine overheating.
WARNING
∙ To avoid the danger of being scalded,
never change the coolant when the en-
gine is hot.
∙ Never remove the radiator or engine coolant reservoir cap when the engine is
hot. Serious burns could be caused by
high pressure fluid escaping from the
radiator.
∙ Avoid direct skin contact with used cool- ant. If skin contact is made, wash thor-
oughly with soap or hand cleaner as soon
as possible.
∙ Keep coolant out of the reach of children and pets.
Engine coolant must be disposed of properly.
Check your local regulations.
LDI3157
Do-it-yourself8-5

Seat belts:Check that all parts of the seat
belt system (for example, buckles, anchors,
adjusters 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 en-
sure they operate smoothly and all latches
lock securely in every position. Check that the
head restraints/headrests move up and
down smoothly and the locks (if so equipped)
hold securely in all latched positions.
Steering wheel: Check for changes in the
steering system, such as excessive free play,
hard steering or strange noises.
Warning lights and chimes: Make sure 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 (except for maintenance free bat-
teries)*: Check the fluid level in each cell. It
should be between the MAX and MIN lines.
Vehicles operated in high temperatures or
under severe conditions require frequent
checks of the battery fluid level.
NOTE:
Care should be taken to avoid situations
that can lead to potential battery discharge
and potential no-start conditions such as:
1. Installation or extended use of elec-
tronic accessories that consume battery
power when the engine is not running
(Phone chargers, GPS, DVD players,
etc.).
2. Vehicle is not driven regularly and/or
only driven short distances.
In these cases, the battery may need to be
charged to maintain battery health.
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 belt*: Make sure the drive belt is
not 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, immediately have the
exhaust system inspected. It is recommended
that you visit an INFINITI retailer for this
service. For additional information, refer to
“Exhaust gas (carbon monoxide)” in the
“Starting and driving” section of this manual.
Fluid leaks: Check under the vehicle for fuel,
oil, water or other fluid leaks after the vehicle
has been parked for a while. Water dripping
from the air conditioner after use is normal. If
you should notice any leaks or if fuel fumes
are evident, check for the cause and have it
corrected immediately.
9-4Maintenance and schedules

MAINTENANCE OPERATION
Perform at number of miles, kilometers or months, whichever comes first. Miles x 1,000
(km x 1,000) Months MAINTENANCE INTERVAL
48.75 (78)78 52.5
(84) 84 56.25
(90)90 60
(96) 96 63.75
(102) 102 67.5
(108) 108 71.25
(114) 114 75
(120) 120 78.75
(126) 126 82.5
(132) 132 86.25
(138) 138 90
(144) 144
Drive belt See NOTE (1)I*I*I*I*I*I*
Air cleaner filter See NOTE (2)R R
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)RRRRRR
Engine oil filter See NOTE (6)RRRRRR
Spark plugs See NOTE (7)Replace every 105,000 miles (168,000 km)
Intake and exhaust valve clearances* See NOTE (8)
NOTE:
(1) After 30,000 miles (48,000 km) or 48 months, inspect every 7,500 miles (12,000 km) or 12 months. Replace the drive belts if found
damaged.
(2) If operating mainly in dusty conditions, more frequent maintenance may be required.
(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% antifreeze 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 coolant.
(6) If the oil replacement indicator is displayed, change the engine oil and filter within two weeks or less than 500 miles (800 km)
(7) Replace spark plug when the plug gap exceeds 0.045 in (1.15 mm) even if within specified periodic replacement mileage.
(8) Periodic maintenance is not required. However, if valve noise increased, inspect valve clearance.
* Maintenance items and intervals with “*” are recommended by INFINITI for reliable vehicle operation. The owner need not perform such
maintenance in order to maintain the emission warranty or manufacturer recall liability. Other maintenance items and intervals are required.
9-10Maintenance and schedules

The following are approximate capacities. The actual refill capacities may be slightly different. When refilling, follow the procedure described
in the “Do-it-yourself” section to determine the proper refill capacity.
Fluid typeCapacity (approximate) Recommended Fluids/Lubricants
Metric
Measure US
Measure Imperial
Measure
Fuel 60 L 15-7/8 gal 13-1/4 gal• For additional information, refer to “Fuel recommendation” in this
section.
Engine oil*1
Drain and refill
*1 For additional information,
refer to “Engine oil” in the “Do-it-
yourself” section of this manual. With oil filter
change 4.7 L 5 qt 4-1/8 qt
• Genuine “Nissan Motor Oil Ester 5W-30 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, re-
fer to “Engine oil and oil filter recommendations” in this section.
Without oil filter
change 4.4 L 4-5/8 qt 3-7/8 qt
Engine coolant
(with reservoir) 7.7 L 2 gal 1-3/4 gal• Pre-diluted Genuine NISSAN Long Life Antifreeze/Coolant (blue) or
equivalent
Continuously Variable Transmission (CVT) fluid ———• Genuine NISSAN CVT Fluid NS-3
• INFINITI recommends using Genuine NISSAN CVT Fluid NS-3 (or
equivalent) ONLY in INFINITI CVTs. Do not mix with other fluids. Us-
ing fluids that are not equivalent to Genuine NISSAN CVT Fluid NS-3
may damage the CVT. Damage caused by the use of fluids other than
as recommended is not covered under the INFINITI’s New Vehicle
Limited Warranty.
Differential gear oil ———• Genuine NISSAN HYPOID FLUID•S1 GL-5 75W-80 or equivalent
• The use of differential gear oil other than the specified may cause ve-
hicle malfunctions and result in non-warranty vehicle repairs.
Transfer oil ———• Genuine NISSAN Differential Oil Hypoid Super GL-5 80W-90 or
equivalent conventional (non-synthetic) oil
Brake fluid ———• Genuine NISSAN Super Heavy Duty Brake Fluid*2 or equivalent DOT
3
*2: Available in mainland USA through an INFINITI retailer.
Multi-purpose grease ——— • NLGI No. 2 (Lithium Soap base)
RECOMMENDED FLUIDS/
LUBRICANTS AND CAPACITIES
10-2Technical and consumer information

∙ While going downhill, the weight of thetrailer pushing on the tow vehicle may
decrease overall stability. Therefore, to
maintain adequate control, reduce your
speed and shift to a lower gear. Avoid
long or repeated use of the brakes when
descending a hill, as this reduces their
effectiveness and could cause overheat-
ing. Shifting to a lower gear instead pro-
vides “engine braking” and reduces the
need to brake as frequently.
∙ If the engine coolant temperature rises to a high temperature, refer to “If your ve-
hicle overheats” in the “In case of emer-
gency” section of this manual.
∙ Trailer towing requires more fuel than normal circumstances.
∙ Avoid towing a trailer for your vehicle’s first 500 miles (805 km).
∙ For the first 500 miles (805 km) that you do tow, do not drive over 50 mph
(80 km/h).
∙ Have your vehicle serviced more often than at intervals specified in the recom-
mended maintenance schedule in the
“Maintenance and schedules” section of
this manual. ∙ When making a turn, your trailer wheels
will be closer to the inside of the turn than
your vehicle wheels. To compensate for
this, make a larger than normal turning
radius during the turn.
∙ Crosswinds and rough roads will ad- versely affect vehicle/trailer handling,
possibly causing vehicle sway. When be-
ing passed by larger vehicles, be prepared
for possible changes in crosswinds that
could affect vehicle handling.
Do the following if the trailer begins to sway: 1. Take your foot off the accelerator pedal to allow the vehicle to coast and steer as
straight ahead as the road conditions
allow. This combination will help stabilize
the vehicle
– Do not correct trailer sway by steering or applying the brakes.
2. When the trailer sway stops, gently ap- ply the brakes and pull to the side of the
road in a safe area.
3. Try to rearrange the trailer load so it is balanced as described in this section. ∙ Be careful when passing other vehicles.
Passing while towing a trailer requires
considerably more distance than normal
passing. Remember, the length of the
trailer must also pass the other vehicle
before you can safely change lanes.
∙ Downshift the transmission to a lower gear for engine braking when driving
down steep or long hills. This will help
slow the vehicle without applying the
brakes.
∙ Avoid holding the brake pedal down too long or too frequently. This could cause
the brakes to overheat, resulting in re-
duced braking efficiency.
∙ Increase your following distance to allow for greater stopping distances while
towing a trailer. Anticipate stops and
brake gradually.
∙ INFINITI recommends that the cruise control not be used while towing a trailer.
∙ Some states or provinces have specific regulations and speed limits for vehicles
that are towing trailers. Obey the local
speed limits.
Technical and consumer information10-27