Check the owner’s manual first
- Your owner’s manual gives the most accurate interval for your exact engine.
- Look for both time-based (e.g., 12 months) and mileage-based (e.g., 5,000–10,000 miles) recommendations.
Normal vs. “severe” driving
- Severe service often includes short trips, extreme temperatures, towing, or lots of stop-and-go traffic.
- If your driving matches severe conditions, follow the shorter interval listed in the manual.
Modern synthetics last longer
- Many modern engines with full synthetic oil can safely go 7,500–10,000 miles between changes under ideal conditions.
- If you’re unsure or your car is older, shorter intervals are safer.