engine INFINITI QX80 2023 Owners Manual

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 KmPerform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
.Brake pads and rotors.Steering gear and linkage.Axle and suspension parts.Propeller shaft (4WD models).Drive shaft boots (4WD models).Exhaust system
Essentials:
.Replace engine oil and filter
7,500 Miles/6 Months/12,000 KmPerform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Essentials:
.Replace engine oil and filter.Tire rotation
Severe use maintenance:
Not Applicable. Proceed to next interval.
10,000 Miles/12 Months/16,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe use maintenance
Inspections:
.Brake pads and rotors.Steering gear and linkage.Axle and suspension parts.Propeller shaft (4WD models).Drive shaft boots (4WD models).Exhaust system
Essentials:
.Replace engine oil and filter.Replace brake fluid
Maintenance and schedules9-7
VK56VD ENGINE MODEL

9-8Maintenance and schedules
15,000 Miles/12 Months/24,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Inspections:
.Brake lines and cables.Brake pads and rotors.Differential gear oil.Propeller shaft (4WD models).Transfer case oil (4WD models).Drive shaft boots (4WD models)
Essentials:
.Replace engine oil and filter.Replace in-cabin microfilter.Tire rotation.Lubricate propeller shaft grease (4WD models)
Severe use maintenance:
Not Applicable. Proceed to next interval.
15,000 Miles/18 Months/24,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
.Brake pads and rotors.Steering gear and linkage.Axle and suspension parts.Propeller shaft (4WD models).Drive shaft boots (4WD models).Exhaust system
Essentials:
.Replace engine oil and filter
20,000 Miles/24 Months/32,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
.Brake pads and rotors.Steering gear and linkage.Axle and suspension parts.Propeller shaft (4WD models).Drive shaft boots (4WD models).Exhaust system
Essentials:
.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
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Inspections:
.Intelligent key battery
Essentials:
.Replace engine oil and filter.Tire rotation
Severe use maintenance:
Not Applicable. Proceed to next interval.
25,000 Miles/30 Months/40,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
.Brake pads and rotors.Steering gear and linkage.Axle and suspension parts.Propeller shaft (4WD models).Drive shaft boots (4WD models).Exhaust system
Essentials:
.Replace engine oil and filter
30,000 Miles/24 Months/48,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Inspections:
.Brake lines and cables.Brake pads and rotors.Fuel tank vapor vent system hoses.Fuel lines/connections.Exhaust system.Steering gear and linkage.Axle and suspension parts.Differential gear oil.Propeller shaft (4WD models).Transfer case oil (4WD models).Drive shaft boots (4WD models)
Essentials:
.Replace engine oil and filter.Replace engine air filter (1).Replace brake fluid.Replace in-cabin microfilter.Tire rotation.Lubricate propeller shaft grease (4WD models)
Severe use 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/48,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
.Brake pads and rotors.Steering gear and linkage.Axle and suspension parts.Propeller shaft (4WD models).Drive shaft boots (4WD models).Exhaust system
Essentials:
.Replace engine oil and filter.Replace brake fluid
35,000 Miles/42 Months/56,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
.Brake pads and rotors.Steering gear and linkage.Axle and suspension parts.Propeller shaft (4WD models).Drive shaft boots (4WD models).Exhaust system
Essentials:
.Replace engine oil and filter
37,500 Miles/30 Months/60,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Essentials:
.Replace engine oil and filter.Tire rotation
Severe use maintenance:
Not Applicable. Proceed to next interval.

40,000 Miles/48 Months/64,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
.Brake pads and rotors.Steering gear and linkage.Axle and suspension parts.Propeller shaft (4WD models).Drive shaft boots (4WD models).Exhaust system
Essentials:
.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
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Inspections:
.Brake lines and cables.Brake pads and rotors.Propeller shaft (4WD models).Differential gear oil.Transfer case oil (4WD models).Drive shaft boots (4WD models)
Essentials:
.Replace engine oil and filter.Replace in-cabin microfilter.Replace Intelligent Key battery.Tire rotation.Lubricate propeller shaft grease (4WD models)
Severe use maintenance:
Not Applicable. Proceed to next interval.
45,000 Miles/54 Months/72,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
.Brake pads and rotors.Steering gear and linkage.Axle and suspension parts.Propeller shaft (4WD models).Drive shaft boots (4WD models).Exhaust system
Essentials:
.Replace engine oil and filter
Maintenance and schedules9-11

9-12Maintenance and schedules
50,000 Miles/60 Months/80,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
.Brake pads and rotors.Steering gear and linkage.Axle and suspension parts.Propeller shaft (4WD models).Drive shaft boots (4WD models).Exhaust system
Essentials:
.Replace engine oil and filter.Replace brake fluid
52,500 Miles/42 Months/84,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Essentials:
.Replace engine oil and filter.Tire rotation
Severe use maintenance:
Not Applicable. Proceed to next interval.
55,000 Miles/66 Months/88,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
.Brake pads and rotors.Steering gear and linkage.Axle and suspension parts.Propeller shaft (4WD models).Drive shaft boots (4WD models).Exhaust system
Essentials:
.Replace engine oil and filter

60,000 Miles/48 Months/96,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Inspections:
.Brake lines and cables.Brake pads and rotors.Engine drive belts.Fuel tank vapor vent system hoses.Fuel lines/connections.Exhaust system.Propeller shaft (4WD models).Axle and suspension parts.Steering gear and linkage.Differential gear oil.Drive shaft boots (4WD models).Transfer case oil (4WD models)
Essentials:
.Replace engine air filter (1).Replace brake fluid.Replace engine oil and filter.Replace in-cabin microfilter.Tire rotation.Lubricate propeller shaft grease (4WD models)
Severe use maintenance:
Not Applicable. Proceed to next interval.
(1) If operating mainly in dusty conditions, more
frequent maintenance may be required.
60,000 Miles/72 Months/96,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
.Brake pads and rotors.Steering gear and linkage.Axle and suspension parts.Propeller shaft (4WD models).Drive shaft boots (4WD models).Exhaust system
Essentials:
.Replace engine oil and filter.Replace brake fluid.Replace differential gear oil.Replace transfer case oil (4WD models)
65,000 Miles/78 Months/104,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
.Brake pads and rotors.Steering gear and linkage.Axle and suspension parts.Propeller shaft (4WD models).Drive shaft boots (4WD models).Exhaust system
Essentials:
.Replace engine oil and filter
Maintenance and schedules9-13

9-14Maintenance and schedules
67,500 Miles/54 Months/108,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Essentials:
.Replace engine oil and filter.Replace Intelligent Key battery.Tire rotation
Severe use maintenance:
Not Applicable. Proceed to next interval.
70,000 Miles/84 Months/112,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
.Brake pads and rotors.Steering gear and linkage.Axle and suspension parts.Propeller shaft (4WD models).Drive shaft boots (4WD models).Exhaust system
Essentials:
.Replace engine oil and filter.Replace brake fluid
75,000 Miles/60 Months/120,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Inspections:
.Brake lines and cables.Brake pads and rotors.Engine drive belts.Propeller shaft (4WD models).Differential gear oil.Drive shaft boots (4WD models).Transfer case oil (4WD models)
Essentials:
.Replace engine oil and filter.Replace in-cabin microfilter.Tire rotation.Lubricate propeller shaft grease (4WD models)
Severe use maintenance:
Not Applicable. Proceed to next interval.

75,000 Miles/90 Months/120,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
.Brake pads and rotors.Steering gear and linkage.Axle and suspension parts.Propeller shaft (4WD models).Drive shaft boots (4WD models).Exhaust system
Essentials:
.Replace engine oil and filter
80,000 Miles/96 Months/128,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Not Applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
.Brake pads and rotors.Steering gear and linkage.Axle and suspension parts.Propeller shaft (4WD models).Drive shaft boots (4WD models).Exhaust system
Essentials:
.Replace engine oil and filter.Replace brake fluid.Replace differential gear oil.Replace transfer case oil (4WD models)
82,500 Miles/66 Months/132,000
Km
Perform at number of miles, kilometers or months,
whichever comes first.
Standard maintenance:
Essentials:
.Replace engine oil and filter.Tire rotation
Severe use maintenance:
Not Applicable. Proceed to next interval.
Maintenance and schedules9-15