Chevrolet 2001 Corvette Owner's Manual page 352

Scheduled Maintenance
Engine Oil Scheduled Maintenance
Change engine oil and filter as indicated by the
R
Engine Oil Life System
whichever occurs first). Reset the system. The system
will show you when to change the oil
3,000 miles (5 000 km) and 15,000 miles (25 000 km)
since your last oil change. Under severe conditions, the
indicator may come on before 3,000 miles (5 000 km).
Never drive your vehicle more than 15,000 miles
(25 000 km) or 12 months without an oil and
filter change. Use engine oil meeting the
GM Standard GM4718M.
7-6
(or every 12 months,
--
usually between
The Engine Oil Life System won't detect dust in the oil.
So if you drive in a dusty area, be sure to change your
oil and filter every 3,000 miles (5 000 km) or sooner if
the CHANGE OIL SOON message appears. Remember
to reset the system when the oil and filter have been
changed. See "Engine Oil Life System" in the Index for
more information on resetting the system.
An Emission Control Service.