1998 NISSAN FRONTIER cooling

The engine cooling system is filled at the
factory with a high-quality, year-round, anti-
freeze coolant solution. The anti-freeze solu-
tion contains rust and corrosion inhibitors,
therefore additional engine cooling system ad-
ditives are not necessary.
CAUTION
When adding or replacing coolant, be
sure to use only an ethylene glycol
anti-freeze with the proper mixture ratio
of 50% anti-freeze and 50% distilled
water. The use of other types of coolant
solutions may damage the engine cool-
ing system.
Outside tempera-
ture down toAnti-
freezeDistilled
water
ÉC ÉF
þ35 þ30 50% 50%
WARNING
cNever remove the radiator cap when
the engine is hot. Wait until the en-
gine and radiator cool down. Seriousburns could be caused by high pres-
sure fluid escaping from the radia-
tor. See precautions in ``If your ve-
hicle overheats'' found in the ``In
case of emergency'' section of this
manual.
cThe radiator is equipped with a pres-
sure cap. Use only a genuine NIS-
SAN cap as it's replacement.
CHECKING ENGINE COOLANT
LEVEL
Check the coolant level in the reservoir tank
when the engine is cold. If the coolant level
is below the MIN level, add coolant to the
MAX level. If the reservoir tank is empty,
check the coolant level in the radiatorwhen
the engine is cold.If there is insufficient
coolant in the radiator, fill the radiator with
coolant up to the filler opening and also add
it to the reservoir tank up to the MAX level.
ADI1026
ENGINE COOLING SYSTEM
8-4Do-it-yourself
ZX

If the cooling system frequently requires
coolant, have it checked by an autho-
rized NISSAN dealer.
CHANGING ENGINE COOLANT
cMajor cooling system repairs should be
performed by an authorized NISSAN
dealer. The service procedures can be
found in the appropriate NISSAN Service
Manual.cImproper servicing can result in reduced
heater performance and engine over-
heating.
WARNING
cTo avoid the danger of being
scalded, never change the coolant
when the engine is hot.
cNever remove the radiator cap when
the engine is hot. Serious burns
could be caused by high pressure
fluid escaping from the radiator.
1. Open the radiator drain valve. Open the
drain plug on the engine block.
2.
Open the radiator cap to drain the coolant.
3. Flush the cooling system by running
fresh water through the radiator.
4. Close the radiator drain valve and drain
plug on the engine block securely.
5. See ``Capacities and recommended
fuel/lubricants'' in the ``Technical and
consumer information'' section for cool-
ing system capacity. Fill the radiator
slowly with the proper mixture of coolant
and water. Fill the reservoir tank slowly
up to the MAX level.
ADI1027
Do-it-yourself8-5
ZX

EXPLANATION OF
MAINTENANCE ITEMS
Additional information on the following
items with an ``*'' is found in the ``Do-it-
yourself'' section of this manual.
Emission control system
maintenance
Drive belts*Check drive belts for wear,
fraying or cracking and also for proper ten-
sion. Replace any damaged drive belts.
Air cleaner filterUnder normal driving con-
ditions, the air cleaner filter should be re-
placed in accordance with the maintenance
schedule. However, driving the vehicle in
dusty areas may cause rapid clogging of the
element. Consequently, the element may
have to be replaced more frequently.
Positive crankcase ventilation (PCV) fil-
terUnder normal driving conditions, the
filter should be replaced in accordance with
the maintenance schedule. If the vehicle is
operated under extremely adverse weather
conditions or in areas where ambient tem-
peratures are either extremely low or ex-
tremely high, the filter may become cloggedmore rapidly. In such an event, replace the
filter immediately.
EVAP Vapor linesCheck vapor lines and
connections for leaks, looseness, or dete-
rioration. If leaks are found, replace the
lines.
Fuel lines (hoses, piping, connections,
etc.)Check the fuel hoses, piping and con-
nections for leaks, looseness or deteriora-
tion. Replace any damaged parts.
Fuel filterIf the vehicle is operated under
extremely adverse weather conditions or in
areas where ambient temperatures are ei-
ther extremely low or extremely high, the
filter might become clogged. In such an
event, replace the filter immediately.
Engine coolant*Flush and refill the cooling
system.
Engine oil and oil filter*Under normal
driving conditions, the engine oil and oil filter
should be replaced in accordance with the
maintenance schedule. However, under se-
vere driving conditions, they may have to be
replaced more frequently.
Spark plugs*Replace with new plugs hav-
ing the correct heat range.
Chassis and body maintenance
Brake lines and cablesCheck the brake
lines and hoses (including brake booster
vacuum hoses, connections & check valve)
and parking brake cables for proper attach-
ment, leaks, cracks, chafing, abrasion, de-
terioration, etc.
Brake pads, discs, drums and linings
Check these and the other brake compo-
nents for wear, deterioration and leaks. Un-
der severe driving conditions, they may have
to be inspected more frequently.
Manual and automatic transmission,
transfer and differential gear oilVisually
inspect for signs of leakage. Under severe
driving conditions, the oil should be re-
placed at the specified interval.
Steering gear (box) and linkage, axle and
suspension parts and drive shaft boots
Check for damage, looseness and leakage
of oil or grease. Under severe driving con-
ditions, they may have to be inspected more
frequently.
9-10Maintenance
ZX

The following are approximate capacities. The actual refill capacities may be a little different. When refilling, follow the procedure
described in the ``Do-it-yourself'' section to determine the proper refill capacity.
Capacity (Approximate)
Recommended Fluids & Lubricants
US
measureImp
measureLiter
Fuel 15-7/8 gal 13-1/4 gal 60Unleaded gasoline with an octane rating
of at least 87 AKI (RON 91)*1
Engine oil (Refill)
4x2 With oil filter 3-3/4 qt 3-1/8 qt 3.5
API SG or SH and Energy Conserving II *2
API Certification Mark *2 Without oil filter 3-1/2 qt 2-7/8 qt 3.3
4x4 With oil filter 4-1/8 qt 3-3/8 qt 3.9
Without oil filter 3-7/8 qt 3-1/8 qt 3.7
Cooling system (with heater and reservoir tank)
4x2 M/T 9-5/8 qt 8 qt 9.15
Anti-freeze coolant
(Ethylene glycol base) 4x2 A/T 9-1/2 qt 7-7/8 qt 8.95
4x4 9-3/4 qt 8-1/8 qt 9.25
*1: For further details, see ``Fuel recommendation''.
*2: For further details, see ``Recommended SAE engine oil viscosity''.
CAPACITIES AND
RECOMMENDED FUEL/
LUBRICANTS
10-2Technical and consumer information
ZX

D
Daytime running light system (Canada
only) ........................................................... 2-14
Dimensions and weights.......................... 10-11
Door locks .................................................... 3-2
Drive belts .................................................. 8-14
Driving
Auto-lock free-running hubs ................. 5-16
Cold weather driving............................. 5-26
Driving with automatic transmission ....... 5-6
Driving with manual transmission ........... 5-8
Driving your 4-wheel drive safely ......... 5-21
Manual-lock free-running hubs ............. 5-19
Precautions when starting and driving ... 5-2
E
Economy - fuel........................................... 5-14
Emission control information label........... 10-13
Emission control system warranty ........... 10-25
Engine
Before starting the engine ...................... 5-6
Capacities and recommended fuel/
lubricants .............................................. 10-2
Changing engine coolant........................ 8-5
Changing engine oil................................ 8-7
Changing engine oil filter........................ 8-9
Checking engine coolant level ............... 8-4
Checking engine oil level ....................... 8-6
Engine compartment check locations .... 8-3Engine coolant temperature gauge ........ 2-5
Engine cooling system ........................... 8-4
Engine oil ................................................ 8-6
Engine oil and oil filter
recommendation ................................... 10-6
Engine oil pressure warning light ........... 2-9
Engine oil viscosity ............................... 10-7
Engine serial number ......................... 10-13
Engine specifications ............................ 10-9
Starting the engine ............................... 5-10
Exhaust gas (Carbon monoxide) ................. 5-2
F
Flashers (See hazard warning flasher
switch) ........................................................ 2-16
Flat tire ......................................................... 6-2
Floor mat positioning aid ............................. 7-4
Fluid
Automatic transmission fluid (ATF) ........ 8-9
Brake fluid ................................... 10-3, 8-11
Capacities and recommended fuel/
lubricants .............................................. 10-2
Clutch fluid ............................................ 8-11
Engine coolant ........................................ 8-4
Engine oil ................................................ 8-6
Power steering fluid .............................. 8-11
Window washer fluid ............................ 8-12
F.M.V.S.S. certification label ................... 10-13
Front seats
Bench...................................................... 1-4
Separate ................................................. 1-2Fuel
Capacities and recommended fuel/
lubricants .............................................. 10-2
Fuel economy ....................................... 5-14
Fuel filler cap .......................................... 3-9
Fuel gauge.............................................. 2-6
Fuel octane rating................................. 10-5
Fuel recommendation ........................... 10-4
Fuses ......................................................... 8-22
G
Gauge
Engine coolant temperature gauge ........ 2-5
Fuel gauge.............................................. 2-6
Odometer ................................................ 2-3
Speedometer .......................................... 2-3
Tachometer............................................. 2-5
General maintenance .................................. 9-2
H
Hazard warning flasher switch .................. 2-16
Head restraints ............................................ 1-3
Headlight and turn signal switch ............... 2-14
Headlights .................................................. 8-23
Heater
Heater and air conditioner controls ........ 4-3
Heater operation ..................................... 4-4
Heater operation .......................................... 4-4
Hood release ............................................... 3-8
11-2
ZX