Depending on vehicle age, type of oil and driving conditions, oil change intervals will vary. It used to be normal to change the oil every 3,000 miles, but with modern lubricants most engines today have recommended oil change intervals of 5,000 to 7,500 miles. Moreover, if your car's engine requires full-synthetic motor oil, it might go further between services! You cannot judge engine oil condition by color, so follow the factory maintenance schedule for oil changes. Less frequent oil changes on newer engines make it essential that you check the oil level monthly and top it up as needed. Maintaining proper oil levels can help you avoid costly car repairs; engine wear or damage resulting from low oil levels.