1999 Buick LeSabre Owner's Manual - Page 326

yellowblue Long Trip/Highway Scheduled Maintenance The 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 light comes on. Remember to reset the Oil Life Monitor whenever the oil is changed. For more information, see CHANGE OIL SOON Light in the Index. + A good time to check your brakes is during tire rotation. See "Brake System Inspection" under "Periodic Maintenance Inspections" in Part C of this schedule. ++ If you drive in a highly corrosive environment, your brake calipers may require additional inspection and service, at every other tire rotation. See "Caliper/Knuckle Maintenance Inspection" under "Periodic Maintenance Inspections" in Part C of this schedule. 7-24