engine coolant lexus LS400 1995 Engine / 1995 LS400: ENGINE

SECTION 6 – 2
197
SERVICE PROCEDURES AND
SPECIFICATIONS
Engine
Specifications198 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Facts about engine oil consumption201 . . . . . . . . . . . . . . . . . . . . . . . .
Used engine oil202 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the engine oil level203 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the engine coolant level205 . . . . . . . . . . . . . . . . . . . . . . . . . .

ENGINE
199 − COOLING SYSTEM
Capacity
Coolant type
11.0 L (11.6 qt., 9.7 Imp.qt.)
Ethylene − glycol coolant (Do not use alcohol type.)
− FUEL
Fuel type
Research octane number
Only UNLEADED
96 (Octane Rating 91) or higher
− IGNITION SYSTEM
Spark plug−Make NIPPONDENSO
NGK
−Gap
PK20R8
BKR6EP8
0.8 mm (0.031 in.)
− ELECTRICAL SYSTEM
Battery−Specific gravity reading at 20
C (68
F)
[Open voltage at 20
C (68
F)]:
−Charging rates
1.280 [12.7 V] Fully charged
1.180 [12.3 V] Half charged
1.080 [11.9 V] Discharged
5 A max.

ENGINE
205
Oil identification marks
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 SH.
The center portion of the label shows the SAE viscosity
grade such as SAE 5W−30. “Energy−Conserving II”, shown
in the lower portion, indicates that the oil has fuel−saving
capabilities. Oils marked “Energy−Conserving II” will have
higher fuel−saving capabilities than oils marked
“Energy−Conserving”.
The ILSAC (International Lubricant Standardization and
Approval Committee) Certification Mark is displayed on the
front of the container.
CHECKING THE ENGINE COOLANT
LEVEL
 1
Reservoir cap 2
Upper line 3
Lower line
Park the vehicle at a level spot and look at the see−through
coolant reservoir when the engine is cool. The coolant
level is satisfactory if it is between the upper and lower
lines on the tank. If the level is low, add ethylene−glycol
type coolant.
The coolant level in the reservoir will vary with engine coolant
temperature. However, if the level is on or below the lower line,
add coolant to bring the level up to the upper line.
Use only ethylene−glycol type coolant. It will prevent freezing
and corrosion. Neither supplemental inhibitors nor additives
are needed nor recommended. (For information on
ethylene−glycol coolant, see also “Engine coolant selection”
described below.)

ENGINE
206If the coolant level drops within a short time after replenishing,
there may be a leak in the system. Visually check the radiator,
hoses, reservoir cap, drain cock and water pump.
If you can find no leak, have your Lexus dealer test the cap
pressure and check for leaks in the cooling system.
CAUTION
To prevent burning yourself, do not remove the
reservoir cap when the engine is hot.
Engine coolant selection
Your coolant must contain ethylene−glycol antifreeze. In
addition to preventing freezing and subsequent damage to the
engine, this will also prevent corrosion. Further supplemental
inhibitors or additives are neither needed nor recommended.
Read the antifreeze container for information on freeze
protection. Follow the manufacturer’s directions for how much
to mix with water. The total capacity of the cooling system is
given on page 199. We recommend 50% solution be used for
your Lexus, or a sufficient quantity to provide protection to
about −35
C (−31
F).
NOTICE
Do not use alcohol type antifreeze or plain water alone.