2023 NISSAN FRONTIER Engine Cooling

8 Do-it-yourself
Maintenance precautions.......................8-2
Engine compartment check locations ...........8-4
Engine cooling system ..........................8-6
Checking engine coolant level ................8-7
Changing engine coolant ....................8-7
Engine oil .......................................8-8
Checking engine oil level .....................8-8
Changing engine oil and oil filter ..............8-8
Automatic Transmission Fluid (ATF) .............8-13
Power Steering Fluid (PSF) ......................8-14
Brake fluid ...................................... 8-14
Brake fluid ................................... 8-15
Windshield-washer fluid ........................8-15
Windshield-washer fluid reservoir ...........8-15
Battery......................................... 8-16
Jump starting ............................... 8-18
Variable voltage control system ................8-18
Drive belt ....................................... 8-19
Spark plugs .................................... 8-19
Replacing spark plugs ....................... 8-19Air cleaner
..................................... 8-20
In-cabin microfilter .......................... 8-20
Windshield wiper blades ........................8-21
Cleaning .................................... 8-21
Replacing ................................... 8-21
Brakes ......................................... 8-22
Fuses .......................................... 8-23
Engine compartment .......................8-24
Passenger compartment ...................8-25
Battery replacement ........................... 8-26
NISSAN Intelligent Key® ......................8-26
Lights .......................................... 8-28
Headlights .................................. 8-28
Fog lights (if so equipped) ...................8-28
Exterior and interior lights ...................8-29
Wheels and tires ............................... 8-32
Tire pressure ................................ 8-32
Tire labeling ................................. 8-36
T
ypes of tires ................................ 8-39
Tire chains .................................. 8-40
Changing wheels and tires ..................8-41

The engine cooling system is filled at the
factory with a pre-diluted mixture of 50%
Genuine NISSAN Long Life Antifreeze/
Coolant (blue) and 50% water to provide
year-round antifreeze and coolant protec-
tion. The antifreeze solution contains rust
and corrosion inhibitors. Additional engine
cooling system additives are not
necessary.
WARNING
• Never remove the radiator or coolant
reservoir cap when the engine is hot.
Wait until the engine and radiator
cool down. Serious burns could be
caused by high pressure fluid escap-
ing from the radiator. For additional
information on precautions, see “If
your vehicle overheats” (P. 6-13).
• The radiator and coolant reservoir
are equipped with a pressure type ra-
diator cap. To prevent engine dam-
age, use only a Genuine NISSAN ra-
diator cap.
CAUTION
• Never use any cooling system addi-
tives such as radiator sealer. Addi-
tives may clog the cooling system
and cause damage to the engine,
transmission and/or cooling system.
• When adding or replacing coolant, be
sure to use only Genuine NISSAN
Long Life Antifreeze/Coolant (blue)
or equivalent. Genuine NISSAN Long
Life Antifreeze/Coolant (blue) is pre-
diluted to provide antifreeze protec-
tion to -34° F (-37° C). If additional
freeze protection is needed due to
weather where you operate your ve-
hicle, add Genuine NISSAN Long Life
Antifreeze/Coolant (blue) concen-
trate following the directions on the
container. If an equivalent coolant
other than Genuine NISSAN Long Life
Antifreeze/Coolant (blue) is used, fol-
low the coolant manufacturer’s in-
structions to maintain minimum an-
tifreeze protection to -34° F (-37° C).
The use of other types of coolant so-
lutions other than Genuine NISSAN
Long Life Antifreeze/Coolant (blue)
or equivalent may damage the en-
gine cooling system. •
The life expectancy of the factory-fill
coolant is 105,000 miles (168,000 km)
or 7 years. Mixing any other type of
coolant other than Genuine NISSAN
Long Life Antifreeze/Coolant (blue)
(or equivalent coolant), including
Genuine NISSAN Long Life
Antifreeze/Coolant (green), or the
use of non-distilled water may re-
duce the life expectancy of the
factory-fill coolant. For additional in-
formation, see the "Maintenance and
schedules" section of this manual.
ENGINE COOLING SYSTEM
8-6Do-it-yourself

CHECKING ENGINE COOLANT
LEVEL
Check the coolant levelin the reservoir
when the engine is cold. If the coolant
level is below the MIN level
OB, add coolant
to the MAX level
OA. If the reservoir is empty,
check the coolant level in the radiator
when the engine is cold. If there is insuffi-
cient coolant in the radiator, fill the radiator
with coolant up to the filler opening and
also add it to the reservoir up to the MAX
level
OA. 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 ex-
pectancy of the factory-fill coolant. For ad-
ditional information, see the "Maintenance
and schedules" section of this manual.
If the cooling system frequently requires
coolant, it is recommended that you visit
a NISSAN dealer for this service.
For additional information on the location
of the engine coolant reservoir, see “Engine
compartment check locations” (P. 8-4).
CHANGING ENGINE COOLANT
A NISSAN dealer can change the engine
coolant. The service procedure can be
found in the NISSAN Service Manual.
Improper servicing can result in reduced
heater performance and engine over-
heating.
WARNING
• To avoid the danger of being scalded,
never change the coolant when the
engine is hot.
• Never remove the radiator or engine
coolant reservoir cap when the en-
gine is hot. Serious burns could be
caused by high pressure fluid escap-
ing from the radiator.
• Avoid direct skin contact with used
coolant. If skin contact is made, wash
thoroughly with soap or hand
cleaner as soon as possible.
• Keep coolant out of the reach of chil-
dren and pets.
Engine coolant must be disposed of prop-
erly. Check your local regulations.
LDI2831
Do-it-yourself8-7

NOTE:
NISSAN does not advocate the use of
non-OEM approved af termarket flush-
ing systems and strongly advises
against performing these services on a
NISSAN product. Many of the af termar-
ket flushing systems use non-OEM ap-
proved chemicals or solvents, the use of
which has not been validated by NISSAN.
For recommended fuel, lubricants, fluids,
grease, and refrigerant, see “Recom-
mended fluids/lubricants and capaci-
ties” (P. 10-2).
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 inter-
vals. 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 replac-
ing coolant, be sure to use only Genuine
NISSAN Long Life Antifreeze/Coolant (blue)
or equivalent with the proper mixture. (For additional information on the proper mix-
ture for your area, see “Engine cooling sys-
tem” (P. 8-6).
NOTE: Mixing any other type of coolant
or the use of non-distilled water may re-
duce the recommended service interval
of the coolant.
Engine oil and oil filter:
Replace engine oil
and oil filter at the specified intervals. For
recommended oil grade and viscosity, see
“Recommended fluids/lubricants and ca-
pacities” (P. 10-2).
Engine valve clearance*: Inspect only if
valve noise increases. Adjust valve clear-
ance if necessary.
Evaporative emissions control vapor
lines*: Check vapor lines for leaks or loose-
ness. Tighten connections or replace parts
as necessary.
Fuel filter: Periodic maintenance is not re-
quired. (in-tank type filter)
Fuel lines*: Check the fuel hoses, piping
and connections for leaks, looseness, or
deterioration. Tighten connections or re-
place parts as necessary.
Spark plugs: Replace at specified intervals.
Install new plugs of the same type as origi-
nally equipped.
CHASSIS AND BODY
MAINTENANCE:
Brake lines and cables: Visually inspect for
proper installation. Check for chafing,
cracks, deterioration, and signs of leaking.
Replace any deteriorated or damaged
parts immediately.
Brake pads and rotors:
Check for wear, de-
terioration and fluid leaks. Replace any dete-
riorated or damaged parts immediately.
Exhaust system: Visually inspect the ex-
haust pipes, muffler and hangers for leaks,
cracks, deterioration, and damage. Tighten
connections or replace parts as necessary.
Propeller shaf t(s): Check for damage,
looseness, and grease leakage.
In-cabin microfilter: Replace at specified
intervals. When driving for prolonged peri-
ods in dusty conditions, replace the filter
more frequently.
Steering gear and linkage, axle and sus-
pension parts, drive shaf t boots: Check
for damage, looseness, and leakage of oil
or grease. Under severe driving conditions,
inspect more frequently.
9-6Maintenance and schedules

Check tire pressure..........2-34, 2-36Child restraint with top tether strap. . . .1-31Child restraints.......1-23,1-24,1-26,1-28Precautions on child
restraints.........1-38, 1-41, 1-54, 1-64Top tether strap anchor point
locations...................1-31Child safety rear door lock..........3-7Cleaning exterior and interior......7-2,7-4Cold weather driving............5-134Console box..................2-72Controls
Heater and air conditioner controls. .4-39Heater and air conditioner controls
(manual)...................4-29CoolantCapacities and recommended
fuel/lubricants
...............10-2Changing engine coolant.........8-7Checking engine coolant level......8-7Engine coolant temperature gauge. . .2-6Corrosion protection..............7-7Cruise control..............5-50, 5-51Cup holders...................2-73Curtain side-impact and rollover air
bag....................... .1-86
D
Daytime Running Light System......2-48Daytime Running Lights (DRL) system. .2-48Dimensions and weights..........10-11Dimmer switch for instrument panel. . .2-49
Door locks....................3-4Drive belt....................8-19Driving
Cold weather driving...........5-134Driving with automatic transmission.5-19Precautions when starting and
driving................. .5-4, 5-11Driving the vehicle...............5-18
E
Eco Drive Report................2-9Economy - fuel................5-109Electronic locking rear differential (E-Lock)
system.....................5-115Electronic locking rear differential (E-Lock)
system switch.................2-55Emergency call (SOS) button........2-58Emergency engine shutoff.......5-15,6-2Emission control information label. . . .10-13Emission control system warranty. . . .10-42Engine
Before starting the engine........5-17Capacities and recommended
fuel/lubricants...............10-2Changing engine coolant.........8-7Changing engine oil............8-8Changing engine oil filter.........8-8Checking engine coolant level......8-7Checking engine oil level.........8-8Engine coolant temperature gauge. . .2-6Engine cooling system...........8-6Engine oil.................. .8-8
Engine oil and oil filter
recommendation.............10-7Engine oil pressure gauge.........2-8Engine oil pressure warning light. . . .2-15Engine oil viscosity.............10-7Engine serial number..........10-12Engine specifications...........10-9Engine Block Heater.............5-135Engine coolant temperature gauge. . . .2-6Engine oil pressure gauge..........2-8Event Data recorders............10-44Exhaust gas (Carbon monoxide)......5-4Explanation of maintenance items.....9-2Explanation of scheduled maintenance
items...................... .9-5Extended storage switch..........2-66Eyeglass case.................2-72
F
Flashers (See hazard warning flasher
switch)......................6-2Flat tire......................6-3Floor mat positioning aid...........7-6Fluid
Brake fluid..................8-14Capacities and recommended
fuel/lubricants...............10-2Engine coolant................8-6Engine oil.................. .8-8Power steering fluid............8-14Windshield-washer fluid.........8-15Fog light switch................2-49
11-2