2020 NISSAN FRONTIER spark plugs replace

8 Do-it-yourself
Maintenance precautions.......................8-2
Engine compartment check locations ...........8-3
Engine cooling system ..........................8-4
Checking engine coolant level ................8-5
Changing engine coolant ....................8-5
Engine oil .......................................8-6
Checking engine oil level .....................8-6
Changing engine oil and oil filter ..............8-6
Automatic Transmission Fluid (ATF) .............8-10
Power Steering Fluid (PSF) ......................8-10
Brake fluid ....................................... 8-11
Brake fluid .................................... 8-11
Windshield-washer fluid ........................8-12
Windshield-washer fluid reservoir ...........8-12
Battery......................................... 8-13
Jump starting ............................... 8-14
Variable voltage control system ................8-15
Drive belt ....................................... 8-15
Spark plugs .................................... 8-16
Replacing spark plugs .......................8-16Air cleaner
..................................... 8-17
In-cabin microfilter .......................... 8-17
Windshield wiper blades ........................8-18
Cleaning .................................... 8-18
Replacing ................................... 8-19
Brakes ......................................... 8-20
Fuses .......................................... 8-20
Engine compartment ....................... 8-21
Passenger compartment ...................8-22
Battery replacement ........................... 8-24
NISSAN Intelligent Key® ......................8-24
Lights .......................................... 8-26
Headlights .................................. 8-26
Fog lights (if so equipped) ...................8-27
Exterior and interior lights ...................8-28
Wheels and tires ............................... 8-30
Tire pressure ................................ 8-30
Tire labeling ................................. 8-33
T
ypes of tires ................................ 8-36
Tire chains .................................. 8-37
Changing wheels and tires ..................8-38

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. If replacement is required, it is recom-
mended that you visit a NISSAN dealer for
this service.
SDI1895
SPARK PLUGS
8-16Do-it-yourself

Engine coolant*:Replace coolant at the
specified interval. When adding or replacing
coolant, be sure to use only Genuine NISSAN
Long Life Antifreeze/Coolant (blue) or
equivalent with the proper mixture. (For ad-
ditional information on the proper mixture
for your area, refer to “Engine cooling system”
in the “Do-it-yourself ” section of this manual.)
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 refer
to “Recommended fluids/lubricants and
capacities” in the “Technical and consumer
information” section of this manual.
Evaporative emissions control vapor
lines*: Check vapor lines for leaks or loose-
ness. Tighten connections or replace parts
as necessary.
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,
deterioration and fluid leaks. Replace any
deteriorated or damaged parts immedi-
ately.
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. Tire rotation:
Tires should be rotated every
7,500 miles (12,000 km). When rotating tires,
check for damage and uneven wear. Re-
place if necessary.
Transmission fluid/oil, differential oil: Vi-
sually inspect for signs of leakage at speci-
fied intervals.
Off-road maintenance: Check the follow-
ing items frequently whenever you drive
off-road through deep sand, mud or water:
• Brake pads and rotors
• Brake linings and drums
• Brake lines and hoses
• Differential, transmission and transfer case oil
• Steering linkage
• Propeller shaf t(s) and front drive shaf ts
• Engine air filter
• Clutch housing drain (AWD only)
9-6Maintenance and schedules

STANDARD MAINTENANCE
Abbreviations: I = Inspect and correct or replace as necessary, R = Replace, L = LubricateMAINTENANCE OPERATION
Perform at number of miles, kilometers or months, whichever comes first. Miles x 1,000
(km x 1,000) Months MAINTENANCE INTERVAL
7. 5
(12) 6 15
(24) 12 22.5
(36) 18 30
(48) 24 37.5
(60) 30 45
(72) 36 52.5
(84) 42 60
(96) 48 67.5
(108) 54 75
(120) 60 82.5
(132) 66 90
(144) 72 97.5
(156) 78 105
(168) 84 112.5
(180) 90 120
(192) 96
Air cleaner filter NOTE (1) R R R R
Automatic transmission fluid NOTE (2)(3) I I I I I I I I
Brake fluid RR RR
Brake lines and cables I I I I I I I I
Brake pads and rotors III I I I II
Drive belts NOTE (4) I* I* I* I* I*
Engine coolant* NOTE (5)(6)
Engine oil & oil filter  RRRRRRR RRRRRRRRR
EVAP vapor lines & fuel lines I* I* I* I*
Exhaust system II II
Fuel filter NOTE (7)
In-cabin microfilter R R R R R R R R
Intake & exhaust valve clearance NOTE (8)
Intelligent Key battery I R R R R
Propeller shaf t & drive shaf t boots (4WD models) III I I I II
Propeller shaf t grease (4WD models) L L L L L L L L
Spark plugs NOTE (9) Replace every 105,000 miles (168,000 km)
Steering gear and linkage, axle & suspension parts II II
Tire rotation NOTE (10)
Transfer fluid & differential gear oil NOTE (11) I I I I I I I I
9-8Maintenance and schedules

R
RadioCar phone or CB radio..........4-79FM/AM/SAT radio with compact disc (CD)
player................ .4-44, 4-49Steering wheel audio control switch. .4-71Readiness for inspection maintenance (I/M)
test...................... .10-40Rear power windows.............2-51Rear seat.....................1-6Rear sliding window.............2-52Rear Sonar System (RSS)..........5-39Rear sonar system OFF switch.......2-38Rear window and outside mirror
defroster switch................2-29Rear window defroster switch.......2-29Rearview mirror................3-17RearView Monitor...............4-16Recommended Fluids............10-2Recorders
Event Data................ .10-40Refrigerant recommendation.......10-8Registering a vehicle in another
country.................... .10-11Reporting safety defects (US only). . . .10-39Roof rack....................2-48
S
Safety
Child safety rear door lock.........3-7Child seat belts. .1-28, 1-39, 1-42, 1-54, 1-65
Reporting safety defects (US only). .10-39SeatJump seat...................1-7Seat adjustmentFront manual seat adjustment......1-3Front power seat adjustment.......1-5Seat beltChild safety.................1-25Infants and small children........1-26Injured person................1-18Larger children...............1-26Precautions on seat belt usage.....1-15Pregnant women..............1-18Seat belt extenders............1-24Seat belt maintenance..........1-24Seat belts................1-15,7-6Shoulder belt height adjustment. . . .1-24Three-point type with retractor.....1-19Seat belt extenders..............1-24Seat belt warning light.........1-18,2-20Seatback pockets...............2-41SeatsAdjustment..................1-2Front seats..................1-2Manual front seat adjustment......1-3Rear seat.................. .1-6Security indicator light............2-23Security system
(NISSAN Vehicle Immobilizer System),
engine start
...............2-27,5-13Security systems
Vehicle security system.........2-25Self-adjusting brakes.............8-20Service manual order form.........10-41
Servicing air conditioner...........4-36Setting button.................4-13Shif tingAutomatic transmission.........5-15Shoulder belt height adjustment......1-24Side air bag system (See supplemental
side air bag, curtain and rollover air bag
systems)
................... .1-82Siri® Eyes-Free..............4-73,4-76Smartphone connectivity..........4-72Sonar
Rear system................5-39Spark plug replacement...........8-16Spark plugs...................8-16Specifications................ .10-9Speedometer................. .2-5Speedometer and odometer........2-4SRS warning label...............1-85Stability control................5-35Standard maintenance.........9-7,9-8Starting
Before starting the engine........5-13Jump starting.............6-11,8-14Precautions when starting and
driving.....................5-2Push starting................6-13Starting the engine
(gasoline engine only)............5-13SteeringPower steering fluid............8-10Power steering system..........5-32Tilting steering wheel...........3-16Steering wheel.................3-16Steering wheel audio control switch. . . .4-71
11-6