1992 Lexus ES300 Engine

ENGINE
169
Engine oil selection
Use API grade SG, Energy-Conserving II multigrade engine
oil. Recommended viscosity is as follows.
Recommended viscosity (SAE):
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
CHECKING THE ENGINE
COOLANT LEVEL
“FULL” line
“LOW” line
Look at the see-through coolant reservoir tank. The
coolant level is satisfactory if it is between the “FULL” and
“LOW” lines on the tank. If the level is low, add
ethylene-glycol type coolant.
The coolant level in the reservoir tank will vary with engine
temperature. However, if the level is on or below the “LOW”
line, add coolant to bring the level up to the “FULL” line.
Use only ethylene-glycol type coolant. For information on
ethylene-glycol coolant, see also “Coolant type selection” on
page 170.
If the coolant level drops within a short time after replenishing,
there may be a leak in the system. Visually check the radiator,
hoses, radiator cap, drain cocks, and water pump.

ENGINE
170If 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.
Coolant type 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 163. 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 ELEMENT
To inspect the element, follow the procedure below.
Cover
Clips
1. Release 4 clips.
Element

ENGINE
171 2. Raise the cover and take out the element.
Inspect the lower surface of the element. If it is dirty, it should
be replaced If it is just moderately dusty, it may be cleaned by
blowing compressed air from the direction of the upper
surface. Do not wash or oil the element.
When installing an element, be sure to remove any dust from
where the element sits and put the element properly in place.
NOTICE:
Do not drive with the air cleaner removed, or excessive
engine wear could result. Also backfiring could cause a
fire in the engine compartment.