Modern synthetic oils have rendered the old "3,000-mile oil change" rule obsolete, yet 40% of Americans still follow it — wasting $4 billion annually on unnecessary oil changes according to AAA research.
Actual Intervals
Most 2020+ vehicles with synthetic oil require changes every 7,500-10,000 miles or once per year. Some manufacturers like BMW and Toyota specify 15,000-mile intervals for certain models.
How to Know Your Interval
Check your owner's manual — not the sticker from the oil change shop, which has a financial incentive to bring you back sooner. Oil life monitors in modern cars are accurate to within 5%.
- Synthetic: 7,500-10,000 mile intervals
- 40% of Americans change too often
- $4 billion wasted annually
- Trust your owner's manual, not the shop
