cooling Lexus ES300 1994 Engine

ENGINE
172− COOLING SYSTEM
Capacity
Coolant type
8.7 L (9.2 qt., 7.7 Imp.qt.)
Ethylene-glycol coolant (Do not use alcohol type.)
− FUEL
Fuel type
Research octane number.
Only UNLEADED
91 (Octane Rating 87) or higher
− IGNITION SYSTEM
Spark plug− Make NIPPONDENSO
NGK
− Gap
PK20R11
BKR6EP-11
1.1 mm (0.043 in.)
− ELECTRICAL SYSTEM
Battery− Specific gravity reading at 20
C (68
F):
− Charging rate
1.280 Fully charged
1.180 Half charged
1.080 Discharged
5 A max.

ENGINE
174
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
70 L (18.5 gal., 15.4 Imp.gal.)
FACTS ABOUT ENGINE OIL
CONSUMPTION
Functions of engine oil
Engine oil has the primary function of lubricating and cooling
the inside of the engine, and plays a major role in maintaining
the engine in proper working order.
Engine oil consumption
It is normal that an engine should consume some engine
oil during normal engine operation. The causes of oil
consumption in a normal engine are as follows.
Oil is used to lubricate pistons, piston rings and cylinders.
A thin film of oil is left on the cylinder wall when a piston
moves downwards in the cylinder. High negative pressure
generated when the vehicle is decelerating sucks some of
this oil into the combustion chamber. This oil as well as
some part of the oil film left on the cylinder wall is burned by
the high temperature combustion gases during the
combustion process.
Oil is also used to lubricate the stems of the intake valves.
Some of this oil is sucked into the combustion chamber
together with the intake air and is burned along with the fuel.
High temperature exhaust gases also burn the oil used to
lubricate the exhaust valve stems.

ENGINE
Cover
Clips
Filter
179 If no leak can be found, have the cap pressure tested at your
Lexus dealer.
CAUTION:
To prevent burning yourself, do not remove the radiator
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 171. 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.
CHECKING AND REPLACING THE
AIR CLEANER FILTER
To inspect the filter, follow the procedure below.
1. Release 4 clips.