The 30-60-90 rule says that you should have your car serviced every 30,000 miles. These are major services done at 30,000, 60,000 and 90,000 miles, and not just oil changes. These intervals are proven to keep your car running reliably for many years. Some technicians even recommend doing these services sooner.
When should I change the oil in my car?+
Oil changes should be done at the recommended manufacturer interval. You should also pay close attention to operating conditions as this may change the interval timing or mileage.