Many modern engines using full-synthetic oil have manufacturer-recommended intervals in the thousands of miles rather than the old 3,000-mile habit, but the only correct number is the one in your owner's manual for your driving conditions. "Severe service" driving shortens it, and many quick-lube stickers are more conservative than your manufacturer requires.
Checklist
Manual-first oil check
Find the exact oil section in the owner’s manual, not only a forum or retailer result.
Write down the viscosity grade and the required specification as two separate requirements.
Confirm engine, model year, market, and service schedule before buying oil or parts.
Check capacity with filter and avoid overfilling.
Keep a mileage/date note after the service so the next interval is clear.
Use this before buying oil, choosing an alternate grade, or changing the interval.
Use your manual’s interval, not a sticker
Your manufacturer sets the oil-change interval for your specific engine and oil specification. Many service stickers default to a shorter, more conservative number. Start from the owner’s manual, then adjust for how you actually drive.
Normal vs severe service
Most manuals list two schedules:
Normal service — the longer interval, for typical mixed driving.
Severe service — a shorter interval for tougher conditions (short trips, extreme temperatures, towing, dust, heavy idling).
Pick the schedule that matches your real-world driving. If most of your trips are short or you tow, you may be on the severe schedule even if it doesn’t “feel” severe.
Oil-life monitors
Many newer vehicles estimate remaining oil life from how the engine is actually used. These systems are generally reliable — but still confirm against your manual, and don’t ignore a “change oil” message.
Frequently asked questions
Is the 3,000-mile oil change still a thing?
For many modern engines on synthetic oil, no — it is usually more conservative than the manufacturer schedule. Follow your manufacturer's interval, which is often significantly longer unless severe service applies.
What counts as "severe service"?
Frequent short trips, extreme heat or cold, heavy towing, dusty roads, or lots of stop-and-go. Many manuals have a separate, shorter severe-service interval — check which schedule applies to you.
Should I trust the windshield sticker?
Treat it as a reminder, not gospel. Compare it to your manual or your car's oil-life monitor; shop stickers are often shorter than the manufacturer's interval.