2003 Lexus Sc Maintenance
Manufacturer-Recommended Service Schedule
The manufacturer-recommended maintenance schedule for the 2003 Lexus Sc is shown above. Keeping up with these service intervals prevents premature wear, maintains fuel economy, and protects your powertrain warranty.
The most critical intervals are engine oil changes (typically every 5,000–10,000 miles for full synthetic), tire rotation (every 5,000–7,500 miles), and brake fluid (every 2–3 years). Always verify intervals against your owner's manual — the schedule varies by driving conditions.
| Service Item | Interval | Notes |
|---|---|---|
| Engine Oil & Filter | 5,000 mi / 6 mo | 5W-30 synthetic, 5.5 qt (4.3L V8) |
| Tire Rotation | 5,000 mi / 6 mo | Staggered setup may limit rotation |
| Cabin Air Filter | 15,000 mi / 18 mo | Replace as needed |
| Engine Air Filter | 30,000 mi / 36 mo | Inspect at 15,000 mi |
| Brake Fluid | 30,000 mi / 36 mo | DOT 3 |
| Transmission Fluid | 60,000 miles | 5-speed automatic; inspect at 30,000 mi |
| Coolant | 100,000 miles | Toyota SLLC; then every 50,000 mi |
| Spark Plugs | 120,000 miles | Iridium-tipped |
| Timing Belt | 90,000 miles | Belt driven; replace with water pump |
| Serpentine Belt | 60,000 miles | Inspect at 40,000 mi |
| Battery | 48 months | Inspect annually |
Key Fluid & Maintenance Specs
Motor Oil
5W-30 Full Synthetic — 5.5 qt
Lug Nut Torque
76 ft-lbs
Brake Fluid
DOT 3
Coolant
Pink Long Life Coolant (OAT)
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