1999 Lexus GS300 service

SECTION 6 ± 2
378
SERVICE PROCEDURES AND
SPECIFICATIONS
Engine
Specifications (GS400) 379. . . . . . . . . . . . . . . . . . . . . . . .
Specifications (GS300) 383. . . . . . . . . . . . . . . . . . . . . . . .
Fuel387 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Facts about engine oil consumption389 . . . . . . . . . . . . .
Used engine oil391 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the engine oil level392 . . . . . . . . . . . . . . . . . . .
Checking the engine coolant level397 . . . . . . . . . . . . . . .
Spark plugs401 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ENGINE
388and 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.
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.

ENGINE
391
USED ENGINE OIL
CAUTION
Used engine oil contains potentially harmful
contaminants which may cause skin disorders such
as inflammation or skin cancer, so care should be
taken to avoid prolonged and repeated contact with
it. To remove used engine oil from your skin, wash
thoroughly with soap and water.
Do not leave used oil within the reach of children.
Dispose of used oil and used oil filters only in a safe
and acceptable manner. Do not dispose of used oil
and used oil filters in household trash, in sewers or
onto the ground. Call your Lexus dealer or a service
station for information concerning recycling or
disposal.

ENGINE
397
Oil identification marks
62L006±1

API Service Symbol
ILSAC Certification
Mark
Either or both API registered marks are added to some
oil containers to help you select the oil you should use.
The API Service Symbol is located anywhere on the
outside of the container.
The top portion of the label shows the oil quality by
API (American Petroleum Institute) designation 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 capabilities.
The ILSAC (International Lubricant Standardization
and Approval Committee) Certification Mark is
displayed on the front of the container.
CHECKING THE ENGINE
COOLANT LEVEL