Chevrolet 2007 Optra Owner's Manual page 362

12,000 Miles (20 000 km)
Change engine oil and filter and replace engine
oil pan drain plug washer (or every 3 months,
whichever occurs first). An Emission Control
Service.
Rotate tires. See Tire Inspection and Rotation
on page 316 for proper rotation pattern and
additional information. (See footnote +.)
15,000 Miles (25 000 km)
Change engine oil and filter and replace engine
oil pan drain plug washer (or every 3 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.
Inspect engine air cleaner filter and replace
engine oil pan drain plug washer. If necessary,
replace the filter. If vehicle is driven in
dusty/dirty conditions, inspect filter at every
engine oil change. See Engine Air Cleaner/Filter
on page 264 for more information.
Inspect drive belt(s).
362
18,000 Miles (30 000 km)
Change engine oil and filter and replace engine
oil pan drain plug washer (or every 3 months,
whichever occurs first). An Emission Control
Service.
Rotate tires. See Tire Inspection and Rotation
on page 316 for proper rotation pattern and
additional information. (See footnote +.)
21,000 Miles (35 000 km)
Change engine oil and filter and replace engine
oil pan drain plug washer (or every 3 months,
whichever occurs first). An Emission Control
Service.
24,000 Miles (40 000 km)
Change engine oil and filter and replace engine
oil pan drain plug washer (or every 3 months,
whichever occurs first). An Emission Control
Service.
Rotate tires. See Tire Inspection and Rotation
on page 316 for proper rotation pattern and
additional information. (See footnote +)