fuel cap LEXUS SC300 1999 User Guide

ENGINE
339
Gasolines quality
In a very few cases, you may experience driveability
problems caused by the particular gasoline that you are using.
If you continue to have unacceptable driveability, try
changing gasoline brands. If that does not rectify your
problem, then consult your Lexus dealer.
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
78 L (20.6 gal., 17.2 lmp.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
347
Oil identification marks
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. ºEner gy±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

CHASSIS
364The recommended cold tire pressures, tire size and the
vehicle capacity weight are given on the label.
You should check the tire pressures every two weeks, or at
least
once a month. And don't forget the spare! The pressure
for the spare tire should be same with that for the standard tire.
(See page 356 or 358.) Incorrect tire pressure can reduce tire
life and make your vehicle less safe to drive.
Low tire pressure results in excessive wear, poor handling,
reduced fuel economy, and the possibility of blowouts from
overheated tires. Also, low tire pressure can cause poor
sealing of the tire bead. If the tire pressure is excessively low,
there is the possibility of wheel deformation and/or tire
separation. So keep your tire pressures at the proper level. If
a tire needs frequent refilling, have it checked by your Lexus
dealer. High tire pressure produces a harsh ride, handling problems,
excessive wear at the center of the tire tread, and a greater
possibility of tire damage from road hazards.
The following instructions for checking tire pressure should
be observed:

The pressure should be checked only when the tires are
cold. If your vehicle has been parked for at least 3 hours
and has not been driven for more than 1.5 km or 1 mile
since, you will get an accurate cold tire pressure reading.
 Always use a tire pr essure gauge. The appearance of the
tire can be misleading. Besides, tire pressures that are even
just a few pounds off can degrade handling and ride.
 Do not bleed or reduce tire pressure after driving. It is
normal for the tire pressure to be higher after driving.
 Never exceed the vehicle capacity weight. The
passengers and luggage weight should be located so that
the vehicle is balanced.
 Be sure to reinstall the tire valve caps. Without the valve
caps, dirt or moisture could get into the valve core and
cause air leakage. If the caps have been lost, have new
ones put on as soon as possible.

BODY
405
SPECIFICATIONS
± DIMENSIONS AND WEIGHTOverall length
Overall width
Overall height
Wheelbase
Tread ± Front ± Rear
Vehicle capacity weight (occupants + luggage)
4900 mm (192.9 in.) / 4890 mm (192.5 in.)*1
1800 mm (70.9 in.)
1350 mm (53.1 in.)*2
2690 mm (105.9 in.)
1520 mm (59.8 in.)
1525 mm (60.0 in.)
340 kg (750 lb.)
*1: without front license plate moulding *2: Unladen vehicle
± FUEL TANK
Capacity
78 L (20.6 gal., 17.2 lmp.gal.)