Lexus GS300 1998 Owner's Manual page 357

MAINTENANCE
For details of your maintenance schedule, read the separate
"Owner's Manual Supplement/Maintenance Schedule".
It is recommended that any replacement parts used for
maintenance or for the repair of the emission control
system be Lexus supplied.
The owner may elect to use non–Lexus supplied parts for
replacement purposes without invalidating the emission
control system warranty. However, use of replacement
parts which are not of equivalent quality may impair the
effectiveness of the emission control systems.
You may also elect to have maintenance, replacement, or
repair of the emission control devices and system
performed by any automotive repair establishment or
individual without invalidating this warranty. See
Owner's Guide, Owner's Manual Supplement or
Warranty Booklet for complete warranty information.
Where to go for service?
Lexus technicians are well–trained specialists and are kept up
to date with the latest service information through technical
bulletins, service tips, and in–dealership training programs.
They are well informed about the operation of all the systems
on your vehicle.
You can be confident that your Lexus dealer's service
department performs the best job to meet the maintenance
requirements of your vehicle.
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Your copy of the repair order is proof that all required
maintenance has been performed for warranty coverage. And
if any problems should arise with your vehicle while under
warranty, your Lexus dealer will promptly take care of it.
Again, be sure to keep a copy of the repair order for any
service performed on your Lexus.
What about do–it–yourself maintenance?
Many of the maintenance items are easy to do yourself, if you
have a little mechanical ability and a few basic automotive
tools. Simple instructions for how to perform them are
presented in Section 6.
If you are a skilled do–it–yourself mechanic, the Lexus
service manuals are recommended. Please be aware that
do–it–yourself maintenance can affect your warranty
coverage. See your Owner's Guide, Owner's Manual
Supplement or Warranty Booklet for the details.