2023 NISSAN FRONTIER engine

CAUTION
Do not spill fluids on engine cover. This
could damage the engine cover. If flu-
ids are spilled, immediately clean sur-
face with a neutral detergent. Do not
use an organic solvent such as brake
cleaner.
For additional information about drain and
refill capacity, see “Recommended fluids/
lubricants and capacities” (P. 10-2). The
drain and refill capacity depends on the oil
temperature and drain time. Use these
specifications for reference only. Always
use the dipstick to determine the proper
amount of oil in the engine.
10. Start the engine and check for leakage around the drain plug and the oil filter.
Correct as required. Turn the engine off
and wait more than 15 minutes. Check
the oil level with the dipstick. Add en-
gine oil if necessary.Af ter the operation
1. Reinstall engine protectors in reverse or-der of removal.
2. Lower the vehicle carefully to the ground.
3. Reset the oil and oil filter maintenance reminder. For additional information,
see “Vehicle information display” (P. 2-22).
• Dispose of waste oil and filter properly.
• Check your local regulations. When checking or replacement is required,
it is recommended that you visit a NISSAN
dealer for this service.
CAUTION
• NISSAN recommends using Genuine
NISSAN Matic P ATF. Do not mix with
other fluids.
• Do not use CVT fluid or manual trans-
mission fluid in this transmission.
Damage caused by the use of fluids
other than as recommended is not
covered under NISSAN’s New Vehicle
Limited Warranty.
• Using fluids that are not equivalent
to Genuine NISSAN Matic P ATF may
also damage the transmission. Dam-
age caused by the use of fluids other
than as recommended is not covered
under NISSAN’s New Vehicle Limited
Warranty.
AUTOMATIC TRANSMISSION FLUID
(ATF)
Do-it-yourself8-13

Check the power steering fluid level when
the engine is stopped.
The fluid level should be between the COLD
MAX line and the COLD MIN line on the
power steering fluid reservoir at cold fluid
temperatures of 32° - 86°F (0° - 30°C) or at
the HOT MAX line on the power steering
fluid reservoir at hot fluid temperatures of
122° - 176°F (50° - 80°C).If the fluid is cold and is at or below the
COLD MIN line, add Genuine NISSAN PSF-II
or equivalent to the COLD MAX line. If the
fluid is hot and below the HOT MAX line, add
Genuine NISSAN PSF-II or equivalent to the
HOT MAX line. Remove the cap and fill
through the opening.
CAUTION
• DO NOT OVERFILL.
• Do not reuse power steering fluid.
• Recommended fluid is Genuine
NISSAN PSF-II or equivalent For additional brake fluid specification in-
formation, see “Recommended fluids/
lubricants and capacities” (P. 10-2).
WARNING
• Use only new fluid from a sealed con-
tainer. Old, inferior or contaminated
fluid may damage the brake system.
The use of improper fluids can dam-
age the brake system and affect the
vehicle's stopping ability.
• Clean the filler cap before removing.
• Brake fluid is poisonous and should
be stored carefully in marked con-
tainers out of reach of children.
CAUTION
Do not spill the fluid on any painted sur-
faces. This will damage the paint. If fluid
is spilled, immediately wash the sur-
face with water.
LDI3077
POWER STEERING FLUID (PSF) BRAKE FLUID
8-14Do-it-yourself

BRAKE FLUID
Check the brake fluid level in the reservoir. If
the fluid level is below the MIN line
OBor the
brake warning light comes on, add
Genuine NISSAN Super Heavy Duty Brake
Fluid or equivalent DOT 3fluid up to the
MAX line
OA. If fluid must be added fre-
quently, the system should be checked. It is
recommended that you visit a NISSAN
dealer for this service.
WINDSHIELD-WASHER FLUID
RESERVOIR
Fill the windshield-washer fluid reservoir
periodically. Add windshield-washer fluid
when the “Low Washer Fluid” warning mes-
sage is displayed on the vehicle informa-
tion display.
To fill the windshield-washer fluid reservoir,
lif t the cap off the reservoir and pour the
windshield-washer fluid into the reservoir
opening.
Add a washer solvent to the washer for
better cleaning. In the winter season, add a windshield-washer antifreeze. Follow the
manufacturer's instructions for the mix-
ture ratio.
Refill the reservoir more frequently when
driving conditions require an increased
amount of windshield-washer fluid.
Recommended fluid is Genuine NISSAN
Windshield-Washer Concentrate Cleaner &
Antifreeze or equivalent.
CAUTION
• Do not substitute engine antifreeze
coolant for windshield-washer solu-
tion. This may result in damage to the
paint.
• Do not fill the windshield-washer
reservoir with washer fluid concen-
trates at full strength. Some methyl
alcohol based washer fluid concen-
trates may permanently stain the
grille if spilled while filling the
windshield-washer reservoir.
• Pre-mix washer fluid concentrates
with water to the manufacturer's
recommended levels before pouring
the fluid into the windshield-washer
reservoir. Do not use the windshield-
washer reservoir to mix the washer
fluid concentrate and water.
LDI3526LDI3136
WINDSHIELD-WASHER FLUID
Do-it-yourself8-15

• If the battery is labeled “do not open” it ismaintenance free and battery fluid
should not be checked. It is recom-
mended that you visit a NISSAN dealer or
a qualified specialist workshop to con-
firm the battery’s performance.
• Keep the battery surface clean and dry. Clean the battery with a solution of bak-
ing soda and water.
• Make certain the terminal connections are clean and securely tightened.
• If the vehicle is not to be used for 30 days or longer, disconnect the negative (-) bat-
tery terminal cable to prevent discharge.
NOTE:
Care should be taken to avoid situations
that can lead to potential battery dis-
charge and potential no-start conditions
such as:
1.
Installation or extended use of elec-
tronic accessories that consume bat-
tery power when the engine is not run-
ning (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.
WARNING
• Do not expose the battery to flames,
an electrical spark or a cigarette. Hy-
drogen gas generated by the battery
is explosive. Explosive gases can
cause blindness or injury. Do not al-
low battery fluid to contact your skin,
eyes, fabrics or painted surfaces. Sul-
furic acid can cause blindness or in-
jury. Af ter touching a battery or bat-
tery cap, do not touch or rub your
eyes. Thoroughly wash your hands. If
the acid contacts your eyes, skin or
clothing, immediately flush with wa-
ter for at least 15 minutes and seek
medical attention.
• When working on or near a battery,
always wear suitable eye protection
and remove all jewelry.
• Battery posts, terminals and related
accessories contain lead and lead
compounds. Wash hands af ter
handling.
• Keep battery out of the reach of
children.
• Do not tip the battery.
LDI3302
Type A (if so equipped)
Do-it-yourself8-17

NOTE:
Do not try to open the top of the battery.
This battery is not equipped with remov-
able vent caps.
JUMP STARTING
If jump starting is necessary, see “Jump
starting” (P. 6-11). If the engine does not start
by jump starting, the battery may have to
be replaced. It is recommended that you
visit a NISSAN dealer for this service.
CAUTION
• Do not ground accessories directly to
the battery terminal. Doing so will
bypass the variable voltage control
system and the vehicle battery may
not charge completely.
• Use electrical accessories with the
engine running to avoid discharging
the vehicle battery.
NOTE:
If the battery is completely drained the
transmission will not manually shif t to
other positions.
Your vehicle is equipped with a variable
voltage control system. This system mea-
sures the amount of electrical discharge
from the battery and controls voltage gen-
erated by the generator.
The current sensor
OAis located near the
battery along the negative battery cable. If
you add electrical accessories to your ve-
hicle, be sure to ground them to a suitable
body ground such as the frame or engine
block area.
LDI3691
Type B (if so equipped)
LDI3525
VARIABLE VOLTAGE CONTROL
SYSTEM
8-18Do-it-yourself

1. Power steering fluid pump pulley
2. Automatic belt tensioner pulley
3. Air conditioner compressor pulley
4. Crankshaf t pulley
5. Generator pulley
WARNING
Be sure the ignition switch is in the
OFF or LOCK position before servicing
drive belt. The engine could rotate
unexpectedly. 1. Visually inspect the belt for signs of un-
usual wear, cuts, fraying or looseness. If
the belt is in poor condition or is loose,
have it replaced or adjusted. It is recom-
mended that you visit a NISSAN dealer
for this service.
2. Have the belt checked regularly for con- dition and tension in accordance with
the maintenance schedule found in the
"Maintenance and schedules" section of
this manual.
REPLACING SPARK PLUGS
Iridium-tipped spark plugs
It is not necessary to replace iridium-
tipped
OAspark plugs as frequently as con-
ventional type spark plugs because they
last much longer. Follow the maintenance
log shown in the "Maintenance and sched-
ules" section of this manual. Do not service
iridium-tipped spark plugs by cleaning or
regapping.
• Always replace spark plugs with rec-
ommended or equivalent ones.
LDI3616SDI1895
DRIVE BELT SPARK PLUGS
Do-it-yourself8-19

If replacement is required, it is recom-
mended that you visit a NISSAN dealer for
this service.The dry paper type filter element may be
cleaned and reused. Replace it according
to the maintenance log shown in the
"Maintenance and schedules" section of
this manual.
To remove the air cleaner filter:
1. Unlatch the clips
OAand move the air
cleaner cover upward.
2. Remove the air cleaner filter.
3. Wipe the inside of the air cleaner filter housing and the cover with a damp
cloth.
NOTE:
Af ter installing a new air cleaner filter,
make sure the air cleaner cover is seated
in the housing and latch the clips
OA.
WARNING
• Operating the engine with the air
cleaner removed can cause you or
others to be burned. The air cleaner
not only cleans the air, it stops the
flame if the engine backfires. If it isn't
there, and the engine backfires, you
could be burned. Do not drive with
the air cleaner removed, and be care-
ful when working on the engine with
the air cleaner removed.
• Never pour fuel into the throttle body
or attempt to start the engine with
the air cleaner removed. Doing so
could result in serious injury.
IN-CABIN MICROFILTER
The in-cabin microfilter restricts the entry
of airborne dust and pollen particles and
reduces some objectionable outside
odors. The filter is located behind the glove
box. For additional information, see "Main-
tenance and schedules" section of this
manual for change intervals.
LDI3630
AIR CLEANER
8-20Do-it-yourself

Under some driving or climate conditions,
occasional brake squeak, squeal or other
noise may be heard. Occasional brake
noise during light to moderate stops is nor-
mal and does not affect the function or
performance of the brake system.
Proper brake inspection intervals should
be followed.For additional information re-
garding brake inspections, see the appro-
priate maintenance schedule information
in the "Maintenance and schedules" sec-
tion of this manual.
Two types of fuses are used. Type
OAis
used in the fuse boxes in the engine com-
partment. Type
OBis used in the passenger
compartment and engine compartment
fuse boxes. Type
OAfuses are provided as
spare fuses. There are no spare fuses in the
engine compartment. If a type
OAfuse is used to replace a typeOB
fuse, the typeOAfuse will not be level with
the fuse pocket as shown in the illustration.
This will not affect the performance of the
fuse. Make sure the fuse is installed in the
fuse box securely.
Type
OBfuses cannot be installed in the
underhood fuse boxes. Only use type
OA
fuses in the underhood fuse boxes.
NOTE:
Your vehicle may not be equipped with
all fuses listed on the fuse label.
LDI0455LDI0457
FUSES
Do-it-yourself8-23