Chevrolet 2008 Optra Owner's Manual page 316

90,000 Miles (150 000 km)
Change engine oil and filter (or every 12 months,
whichever occurs first). An Emission Control
Service.
Replace passenger compartment air filter. If you
drive regularly under dusty conditions, the filter
may require replacement more often.
Replace engine air cleaner filter. See Engine Air
Cleaner/Filter on page 5-16 for more information.
Rotate tires. See Tire Inspection and Rotation on
page 5-60 for proper rotation pattern and additional
information. (See footnote +.)
Replace spark plugs. An Emission Control Service.
Replace fuel filter. An Emission Control Service.
(See footnote †.)
Check restraint system. Make sure the safety belt
reminder light and safety belt assemblies are
working properly. Look for any other loose or
damaged safety belt system parts. If you see
anything that might keep a safety belt system from
doing its job, have it repaired. Have any torn or frayed
safety belts replaced. Also see Checking the
Restraint Systems on page 1-66.
6-18
Inspect drive belt(s).
Inspect EVAP canister, vapor lines and EVAP
vent solenoid valve. An Emission Control Service.
(See footnote †.)
Inspect PCV system. An Emission Control Service.
(See footnote †.)
97,500 Miles (162 500 km)
Change engine oil and filter (or every 12 months,
whichever occurs first). An Emission Control
Service.
Rotate tires. See Tire Inspection and Rotation on
page 5-60 for proper rotation pattern and additional
information. (See footnote +.)
150,000 Miles (240 000 km)
Drain, flush, and refill cooling system. This service
can be complex; you should have your dealer/retailer
perform this service. See Engine Coolant on
page 5-19 for what to use. Inspect hoses. Clean
radiator, condenser, pressure cap, and neck.
Pressure test the cooling system and pressure cap.
An Emission Control Service.