Changing your car's oil is the simplest way to protect its engine. Your owner's manual shows the manufacturer's recommended oil change interval, which is a great start. But did you know that your driving habits have a big impact on when your car's oil should be changed? How often you drive, how far you go, and in what conditions you travel all play a part in determining your car's ideal oil change interval. By answering a few simple questions, you can identify the best oil drain interval for your specific car based on your unique driving habits. START