open gas tank lexus LS400 1998 Audio System / LEXUS 1998 LS400 OWNER'S MANUAL (OM50498U)
[x] Cancel search | Manufacturer: LEXUS, Model Year: 1998, Model line: LS400, Model: Lexus LS400 1998Pages: 304, PDF Size: 5.94 MB
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ENGINE
227
FUEL
Fuel type
Your vehicle must use only unleaded gasoline.
To help prevent gas station mixups, your Lexus has a smaller fuel
tank opening. The special nozzle on pumps with unleaded fuel will
fit it, but the larger 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 the
three way catalytic converter to lose its effectiveness and the
emission control system to function improperly. Also, this can
increase maintenance costs.
Octane rating
Select premium unleaded gasoline with an Octane Rating of 91
(Research Octane Number 96) or higher for optimum engine
performance. However, if such premium type cannot be
obtained, you may temporarily use unleaded gasoline with an
Octane Rating as low as 87 (Research Octane Number 91).
Use of unleaded fuel with an octane number or rating lower than
stated above will cause persistent heavy knocking. If severe, 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 Lexus dealer.
However, now and then, you may notice light knocking for a short
time while accelerating or driving up hills. This is no cause for
concern.
Gasolines containing detergent additives
Lexus recommends use of gasolines that contain detergent
additives to avoid build up of engine deposits.
For further details, ask your Lexus dealer or a local gasoline retailer.
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ENGINE
228
Improved gasolines
The American Automobile Manufacturers Association (AAMA)
has developed a specification of improved gasolines. The AAMA
specification offers optimal fuel information for better vehicle
performance and better protection of your engine.
Lexus recommends the use of gasolines that meet the AAMA
specification, if available, for improved drivability and emission
control system.
Gasolines containing MTBE
Gasolines that contain MTBE (Methyl 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 drivability
and/or poor fuel economy, you should stop using them.
Gasolines containing MMT
Some gasolines contain an octane enhancing additive called
MMT (methylcyclopentadienyl manganese tricarbonyl).
Lexus does not recommend the use of gasolines that contain MMT.
If fuels containing MMT are used, your emission control system may
be adversely affected. The Malfunction Indicator Lamp on the
instrument cluster may come on. If this happens, contact your Lexus
dealer for service.
Gasolines containing alcohol
Gasohol is a mixture of gasoline and ethanol. If you use gasohol
in your Lexus, be sure that it is unleaded, has an octane rating
no lower than 87 and does not contain more than 10% ethanol.
Lexus does not recommend the use of gasolines containing
methanol.
If you use gasoline containing methanol, use only gasoline meeting
the requirements above and also containing less than 5% methanol
with cosolvents and corrosion inhibitors for methanol.
NOTICE
Do not use gasohol other than stated above. It will cause fuel
system damage or vehicle performance problems.
If drivability problems are encountered (poor hot starting,
vaporizing, engine knock, etc.), discontinue its use.
Take care not to spill gasohol during refueling. Gasohol may
cause paint damage.
Fuel tank capacity
85 L (22.5 gal., 18.7 lmp.gal.)