coolant temperature lexus LS400 1994 Comfort Adjustment / 1994 LS400: ENGINE

10W-30
5W-30 Preferred
Temperature range anticipated before next oil change
ENGINE
193 Oil capacity
Drain and refill
with filter
without filter
Oil grade
Recommended oil viscosity (SAE):
5.1 L (5.4 qt., 4.5 Imp.qt.)
4.8 L (5.1 qt., 4.2 Imp.qt.)
API grade SG or SH, Energy-Conserving II multigrade engine
oil or ILSAC multigrade engine oil
− COOLING SYSTEM
Capacity
Coolant type
10.8 L (11.4 qt., 9.5 Imp.qt.)
Ethylene-glycol coolant (Do not use alcohol type.)
− FUEL
Fuel type
Research octane umber
Only UNLEADED
96 (Octane Rating 91) or higher
− IGNITION SYSTEM

ENGINE
200The ILSAC (International Lubricant Standardization and
Approval Committee) Certification Mark is displayed on the
front of the container.
CHECKING THE ENGINE COOLANT
LEVEL
Reservoir cap
Upper line
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” on this
page.)
If 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 no leak can be found, have the cap pressure tested at your
Lexus dealer.
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 193. 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.