2021 INFINITI QX80 engine oil

8-8Do-it-yourself
After the operation
1. Install the engine undercover into posi-tion as the following steps.
a. Pull the center of the small plastic clip
out.
b. Hold the engine undercover into posi- tion.
c. Insert the clip through the undercover 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. When checking or replacement is required,
we recommend an INFINITI retailer for
servicing.
CAUTION
.
It is recommended that you use only
Genuine NISSAN Matic S ATF. Do
not mix with other fluids.
. Using automatic transmission fluid
other than Genuine NISSAN Matic S
ATF may cause deterioration in dri-
veability and automatic transmission
durability, and may damage the
automatic transmission. Damage
caused by the use of fluid other than
as recommended is not covered by
the INFINITI new vehicle limited
warranty.
SDI1765A
Check the fluid level in the reservoir.
The fluid level should be checked using the
HOT range (
: HOT MAX.,: HOT MIN.) at
fluid temperatures of 122 to 176°F (50 to
80°C) or using the COLD range (
: COLD
MAX.,: COLD MIN.) at fluid temperatures
of 32 to 86°F (0 to 30°C).
If the fluid is below the MIN line, add
Genuine NISSAN PSF or equivalent. Remove
the cap and fill through the opening.
CAUTION
. Do not overfill.
AUTOMATIC TRANSMISSION
FLUID (ATF) POWER STEERING FLUID

9-4Maintenance and schedules
equipped) hold securely in all latched posi-
tions.
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 temperatures or
under severe condition 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 electro-
nic 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 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, immediately have
the exhaust system inspected. It is recom-
mended you visit an INFINITI retailer for this
service. (See “Precautions when starting and
driving” (P.5-4) 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
dripping from the air conditioner after use is
normal. If you should notice any leaks or if
gasoline fumes are evident, check for the
cause and have it corrected immediately.
Power steering fluid level* and lines: Check
the level when the fluid is cold, with the
engine off. Check the lines for proper
attachment, leaks, cracks, etc.
Radiator and hoses: Check the front of the
radiator and clean off any dirt, insects,
leaves, etc., that may have accumulated.
Make sure the hoses have no cracks, defor-
mation, rot or loose connections.
Underbody: The underbody is frequently
exposed to corrosive substances such as
those used on icy roads or to control dust. It
is very important to remove these sub-
stances, otherwise rust will form on the
floor pan, frame, fuel lines and around the
exhaust system. At the end of winter, the
underbody should be thoroughly flushed
with plain water, being careful to clean
those areas where mud and dirt may accu-
mulate. For additional information, see
“Cleaning exterior” (P.7-2).
Windshield washer fluid*: Check that there
is adequate fluid in the reservoir.

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 belt*:
Check engine drive belt for wear, fraying or
cracking and for proper tension. Replace any
damaged drive belt.
Engine air filter:
Replace at specified intervals. When driving
for prolonged periods in dusty conditions,
check/replace the filter more frequently.
Engine coolant*
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” (P.8-4) 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 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.
Fuel lines*:
Check the fuel hoses, piping and connections
for leaks, looseness, or deterioration. Tight-
en connections or replace parts as necessary.
Spark plugs:
Replace at specified intervals. Install new
plugs of the type as originally equipped.
CHASSIS AND BODY MAINTE-
NANCE
Brake lines and cables:
Visually inspect for proper installation.
Check for chafing, cracks, deterioration,
and signs of leaking. Replace any deterio-
rated or damaged parts immediately.
Maintenance and schedules9-5
EXPLANATION OF SCHEDULED
MAINTENANCE ITEMS

The following shows the maintenance schedule.
Choose the maintenance schedule needed based on your vehicle driving conditions.
After 120,000 miles (192,000 km)/96 months, continue maintenance at the same mileage/time interval.
5,000 Miles/6 Months/8,000 KmStandard maintenance:
Not Applicable. Proceed to next interval.
Severe maintenance:
.Inspect brake pads and rotors.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (4WD models).Inspect drive shaft boots (4WD models).Inspect exhaust system.Replace engine oil and filter
7,500 Miles/6 Months/12,000 KmStandard maintenance:.Replace engine oil and filter.Perform tire rotation
Severe maintenance:
Not Applicable. Proceed to next interval.
10,000 Miles/12 Months/16,000
Km
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe maintenance:
.Inspect brake pads and rotors.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (4WD models).Inspect drive shaft boots (4WD models).Inspect exhaust system.Replace engine oil and filter.Replace brake fluid
Maintenance and schedules9-7
STANDARD MAINTENANCE

9-8Maintenance and schedules
15,000 Miles/12 Months/24,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Replace differential gear oil.Inspect propeller shaft (4WD models).Inspect transfer case oil (4WD models).Inspect drive shaft boots (4WD models).Replace engine oil and filter.Replace in-cabin microfilter.Perform tire rotation.Lubricate propeller shaft grease (4WD models)
Severe maintenance:
Not Applicable. Proceed to next interval.
15,000 Miles/18 Months/24,000
Km
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe maintenance:
.Inspect brake pads and rotors.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (4WD models).Inspect drive shaft boots (4WD models).Inspect exhaust system.Replace engine oil and filter
20,000 Miles/24 Months/32,000
Km
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe maintenance:
.Inspect brake pads and rotors.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (4WD models).Inspect drive shaft boots (4WD models).Inspect exhaust system.Replace engine oil and filter.Replace brake fluid.Replace differential gear oil.Replace transfer case oil (4WD models)

22,500 Miles/18 Months/36,000
Km
Standard maintenance:.Inspect Intelligent key battery.Replace engine oil and filter.Perform tire rotation
Severe maintenance:
Not Applicable. Proceed to next interval.
25,000 Miles/30 Months/40,000
Km
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe maintenance:
.Inspect brake pads and rotors.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (4WD models).Inspect drive shaft boots (4WD models).Inspect exhaust system.Replace engine oil and filter
30,000 Miles/24 Months/48,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect fuel tank vapor vent system hoses.Inspect fuel lines/connections.Inspect exhaust system.Inspect steering gear and linkage.Inspect axle and suspension parts.Replace differential gear oil.Inspect propeller shaft (4WD models).Inspect transfer case oil (4WD models).Inspect drive shaft boots (4WD models).Replace engine oil and filter.Replace engine air filter (1).Replace brake fluid.Replace in-cabin microfilter.Perform tire rotation.Lubricate propeller shaft grease (4WD models)
Severe maintenance:
Not Applicable. Proceed to next interval.
(1) If operating mainly in dusty conditions, more
frequent maintenance may be required.
Maintenance and schedules9-9

9-10Maintenance and schedules
30,000 Miles/36 Months/56,000
Km
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe maintenance:
.Inspect brake pads and rotors.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (4WD models).Inspect drive shaft boots (4WD models).Inspect exhaust system.Replace engine oil and filter.Replace brake fluid
35,000 Miles/42 Months/56,000
Km
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe maintenance:
.Inspect brake pads and rotors.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (4WD models).Inspect drive shaft boots (4WD models).Inspect exhaust system.Replace engine oil and filter
37,500 Miles/30 Months/60,000
Km
Standard maintenance:.Replace engine oil and filter.Perform tire rotation
Severe maintenance:
Not Applicable. Proceed to next interval.

40,000 Miles/48 Months/64,000
Km
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe maintenance:
.Inspect brake pads and rotors.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (4WD models).Inspect drive shaft boots (4WD models).Inspect exhaust system.Replace engine oil and filter.Replace brake fluid.Replace differential gear oil.Replace transfer case oil (4WD models)
45,000 Miles/36 Months/72,000
Km
Standard maintenance:.Inspect brake lines and cables.Inspect brake pads and rotors.Inspect propeller shaft (4WD models).Replace differential gear oil.Inspect transfer case oil (4WD models).Inspect drive shaft boots (4WD models).Replace engine oil and filter.Replace in-cabin microfilter.Replace Intelligent Key battery.Perform tire rotation.Lubricate propeller shaft grease (4WD models)
Severe maintenance:
Not Applicable. Proceed to next interval.
45,000 Miles/54 Months/72,000
Km
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe maintenance:
.Inspect brake pads and rotors.Inspect steering gear and linkage.Inspect axle and suspension parts.Inspect propeller shaft (4WD models).Inspect drive shaft boots (4WD models).Inspect exhaust system.Replace engine oil and filter
Maintenance and schedules9-11