How often should you change your oil?
Why the 3,000-mile oil change is a myth for most modern cars, what AAA recommends instead, when synthetic oil lasts longer, and how to stay on schedule.
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Short answer
For most cars from the last 15 years, AAA says oil changes are recommended every 5,000 to 7,500 miles, and full-synthetic oil may go up to 15,000 miles. The 3,000-mile rule is a myth for modern engines. The number that counts is the one in your owner’s manual, by miles or by time, whichever comes first.
Choose this if
A sticker on the windshield is enough if you drive one car and never forget the date.
Choose the other option if
Carumi helps when you want oil changes and every other service reminded by date or mileage, with the receipts kept.
At a glance
| Feature | Windshield sticker | Carumi |
|---|---|---|
| Reminds you by mileage | Partlyif you look at it | Yes |
| Reminds you by date too | Partly | Yeswhichever comes first |
| Keeps the receipt and the oil used | No | Yes |
| Other services on the same schedule | No | Yes |
| Works for several vehicles | No | Yes |
The 3,000-mile myth
In a AAA survey, 45% of people believed oil should be changed every 3,000 miles. AAA calls it a myth: most engine oils today contain additives that extend their life, so for cars 15 years old or newer, oil changes are recommended every 5,000 to 7,500 miles.
Full-synthetic oil can go further, up to 15,000 miles between services according to AAA. Changing too often wastes money and oil; changing too rarely wears the engine.
Follow your owner’s manual
AAA’s bottom line is to always follow the manufacturer’s maintenance schedule. The manual gives an interval in miles and one in months, and the change is due at whichever comes first: a car that sits in the garage still needs fresh oil.
Many manuals also list a heavier schedule for hard use, such as many short trips, towing, dusty roads or extreme temperatures. If that describes your driving, use it.
Oil life monitors and the dipstick
Many recent cars have an oil life monitor that estimates when the oil is worn out from how the car is driven. It needs to be reset after each change, and it estimates oil life, not the oil level.
Check the level with the dipstick now and then and top up with the grade in your manual; an engine can burn or leak oil between changes.
Keep the record
Write down the date, the mileage and the oil used at every change, and keep the receipt. It proves the maintenance for warranty claims, helps a buyer trust the car, and tells you when the next change is due.
Frequently asked questions
How often should I change synthetic oil?
AAA says full-synthetic oil can go up to 15,000 miles; follow the interval in your owner’s manual.
Is changing oil every 3,000 miles necessary?
Not for most modern cars. AAA recommends 5,000 to 7,500 miles for cars 15 years old or newer, or what your manual says.
Do I need an oil change if I barely drive?
Yes, by time. Manuals give a limit in months as well as miles, and the change is due at whichever comes first.
Does the oil life monitor replace the dipstick?
No. It estimates how worn the oil is, not how much is in the engine. Check the level too.
Is Carumi available?
See the official app page for current availability and pricing.
Our pick
Carumi, every service, part and date in one record
Carumi reminds you of each oil change by date or mileage, whichever comes first, from your current odometer, and keeps the receipt and the oil used with the car’s history.
- Maintenance by date, mileage or both
- Receipts and photos with every service
- Real cost of owning the car
