Engine and fluids
Oil changes
How oil grade, driving conditions and mileage intervals shape the right change schedule for your vehicle.
Typical interval: Every 5,000 to 7,500 miles
Engine oil carries heat away from moving parts, suspends combustion residue, and keeps metal surfaces separated by a film only microns thick. That film breaks down on a schedule set by heat cycles and contamination rather than by the calendar alone, which is why two identical vehicles can need different intervals.
Start with the viscosity grade printed in your owner's manual and on the oil filler cap. Short trips, towing, dusty roads, stop-and-go traffic and extreme temperatures all count as severe duty, and most manufacturers shorten the recommended interval when those conditions apply.
Between services, a dipstick check on level ground with a cold engine tells you two things: whether the level is dropping and whether the oil still looks translucent. Gritty texture or a burnt smell is a reason to book service earlier rather than wait for the mileage marker.
What to check
- Confirm the viscosity grade and capacity for your engine
- Check the level monthly with the engine cold and the vehicle level
- Log the mileage and date of every change
- Replace the filter with the oil, not on alternating visits
Also worth knowing
- Reading the viscosity grade in your owner's manual
- Severe-duty driving and why intervals shorten
- What a dark or gritty dipstick reading suggests
AutoLab Maintenance publishes general vehicle maintenance information. Our guides, checklists and reminders are informational only and do not replace your owner's manual or the judgment of a qualified technician. Always follow the manufacturer service schedule for your specific vehicle.