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exPLAnAtion oF MAintenAnCe iteMS
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Scheduled Maintenance Log
engine and inverter Coolants
When inspecting, visually check
the levels of the engine and inverter
coolants on the seethrough reser
voirs. Add coolant as necessary.
When replacing, drain the cooling
system and refill with coolant. Always
use Genuine Toyota Super LongLife
Coolant or similar highquality
nonsilicate, nonamine, nonnitrate,
nonborate ethyleneglycol coolant
with longlife hybrid organic acid
technology (i.e., a combination of low
phosphates and organic acids). A
qualified technician should perform
these operations.
Please refer to the
important safety precautions on the
inside front cover of this booklet.
Check the radiator and condenser
for blockage by leaves, dirt or insects
and clean if necessary. Also check
the hose connections for corrosion
and condition of installation.
note:
Initial replacement of engine
coolant is at 120 months/100,000
miles. Replace every 60 months/
50,000 miles thereafter. Initial
replacement of inverter coolant is
at 180 months/150,000 miles.
Replace every 60 months/50,000
miles thereafter.
engine Oil and Oil filter
Replace the oil filter and drain and
refill the engine oil at specified intervals.
SAE 0W20 oil is the best choice
for good fuel economy and good
starting in cold weather. If SAE 0W20
is not available, SAE 5W20 may be
used; however, it must be replaced
with SAE 0W20 at the next oil
change. See your Lexus dealer for
oil specifically formulated for your
vehicle’s engine.
Your vehicle is equipped with a
replaceable oilfilter element and
oilfilter cap Oring; replace both
at each oil change. For instructions
on how to reset the reminder light,
refer to your
Owner’s Manual
.
note:
If you do the majority of your
driving under any of the special
operating conditions indicated on
page 45, you should replace the
engine oil and oil filter every six
months or 5,000 miles, regardless
of the oil used or the certification
of the vehicle.
engine Valve Clearance
The GS 450h is equipped with
hydraulic valve lash adjusters that
require no periodic clearance
inspection or adjustment.
