4RUNNER (1998)
Fuel
FUEL TYPE
Your new vehicle must use only un-
leaded gasoline.
To help prevent gas station mixups,
your Toyota has a new smaller fuel
tank opening. The special nozzle on
pumps with unleaded fuel will fit it,
but the larger standard nozzle on
pumps with leaded gas will not.
At a minimum, the gasoline you use
should meet the specifications of
ASTM D4814 in the U.S.A. and CGSB
3.5- M93 in Canada.
NOTICE
Do not use leaded gasoline. Use of leaded gasoline will cause thethree- way catalytic converter to
lose its effectiveness and the
emission control system to func-tion improperly. Also, this can in-crease maintenance costs.
OCTANE RATING
Select Octane Rating 87 (Research
Octane Number 91) or higher.
Use of unleaded gasoline with an oc-
tane rating or research octane number
lower than stated above will cause
persistent heavy knocking. If it is se-
vere, this will lead to engine damage.
If your engine knocks...
If you detect heavy knocking even
when using the recommended fuel, or
if you hear steady knocking while
holding a steady speed on level
roads, consult your Toyota dealer.
However, now and then, you may no-
tice light knocking for a short time
while accelerating or driving up hills.
This is no need of concern.
GASOLINES CONTAINING DETER-
GENT ADDITIVES
Toyota recommends use of gaso-
lines that contain detergent addi-
tives to avoid build- up of engine
deposits.
For further details, ask your Toyota
dealer or a local gasoline retailer. IMPROVED GASOLINES
The American Automobile Manufac-
turers Association (AAMA) has de-
veloped a specification of improved
gasolines. The AAMA specification
offers optimal fuel information for
better vehicle performance and bet-
ter protection of your engine.
Toyota recommends the use of gaso-
lines that meet the AAMA specifica-
tion, if available, for improved drive-
ability and emission control system.
GASOLINES CONTAINING MTBE
Gasolines that contain MTBE (Meth-
yl Tertiary- Butyl Ether) are available
in the market. If you use a gasoline
mixed with MTBE, make certain that
it does not contain more than 15%
of MTBE.
If the use of gasolines containing
MTBE causes poor driveability and/or
poor fuel economy, you should discon-
tinue the use of fuels containingMTBE.
4RUNNER (1998)
The top portion of the label shows the
oil quality by API (American Petroleum
Institute) designations such as SJ.
The center portion of the label shows
the SAE
viscosity grade such as SAE 5W- 30.
ºEnergy- Conservingº shown in the
lower portion, indicates that the oil
has fuel- saving capab ilities.
The ILSAC (International Lubricant
Standardization and Approval Commit-
tee) Certification Mark is displayed on
the front of the container. Look at the see- through coolant
reservoir when the engine is cold.
The coolant level is satisfactory if
it is between the ºF (Full)º and ºL
(Low)º lines on the reservoir. If the
level is low, add ethylene- glycol
type coolant.
The coolant level in the reservoir will
vary with engine temperature. Howev-
er, if the level is on or below the ºLº
line, add coolant. Bring the level up
to the ºFº line.
Use only ethylene- glycol type coolant.
See information in the next column.
If the coolant level drops within a
short time after replenishing, there
may be a leak in the system. Visually
check the radiator, hoses, radiator cap
and drain cock and water pump.
If you can find no leak, have your
Toyota dealer test the cap pressure
and check for leaks in the cooling
system.
CAUTION
To prevent burning yourself, do
not remove the radiator cap when
the engine is hot.
Coolant type selection
Your coolant must contain ethylene-
glycol antifreeze. In addition to pre-
venting freezing and subsequent dam-
age to the engine, this will also
prevent corrosion. Further supplemen-
tal inhibitors or additives are neither
needed nor recommended.
Read the antifreeze container for in-
formation on freeze protection. Follow
the manufacturer 's directions for how
much to mix with water. The total ca-
pacity of the cooling system is given
in Part 8. We recommend 50% solu-
tion be used for your Toyota, or a
sufficient quantity to provide protection
to about -35
C (- 31 F).
NOTICE
Do not use alcohol type antifreeze
or plain water alone.
Checking the engine coolan
level
