1999 Lexus GS300 light

ENGINE
382± ELECTRICAL SYSTEM
Battery ± Maintenance type battery
Specific gravity reading at 20C (68F):
Charging rates Quick charge
Slow charge
± Non±maintenance battery
Open voltage at 20C (68F):
Charging rates
1.260 Fully charged
1.160 Half charged
1.060 Discharged
15A max.
5A max.
12.7V Fully charged
12.3V Half charged
11.9V Discharged
[Voltage that is checked 20 minutes after the key is
removed with all the lights turned off]
5A max.

ENGINE
386± ELECTRICAL SYSTEM
Battery ± Maintenance type battery
Specific gravity reading at 20C (68F):
Charging rates Quick charge
Slow charge
± Non±maintenance battery
Open voltage at 20C (68F):
Charging rates
1.260 Fully charged
1.160 Half charged
1.060 Discharged
15A max.
5A max.
12.7V Fully charged
12.3V Half charged
11.9V Discharged
[Voltage that is checked 20 minutes after the key is
removed with all the lights turned off]
5A max.

ENGINE
387
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.
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

ENGINE
395

GS400
GS300
If the oil level is below or only slightly above the low
level mark, add engine oil of the same type as
already in the engine.
Remove the oil filler cap and add engine oil a little at a
time, checking the dipstick. The approximate quantity of
oil needed to fill between the low level mark and the full
level mark on the dipstick is indicated below for
reference.
When the level reaches within the correct range, return
the filler cap and turn the cap clockwise until you hear a
click.
Oil quantity. L (qt., lmp. qt.) 1.8 (1.9, 1.6)
NOTICE
Avoid overfilling, or the engine could be
damaged. Check the oil level on the dipstick once
again after adding the oil.