This varies depending on the type of oil you use. If you use straight, conventional oil, we recommend every 3000 miles. If it’s a blend oil, we recommend every 4-5000 miles, depending on driving habits. If it’s all city driving 4000. If it’s a combination of city and highway you can go 5000. If it’s a full synthetic, we recommend between 5-7000 miles depending, again, on your driving habits.