Oil is an essential lubricant in your engine. It lets metal press against metal without damage. Without oil, the metal-on-metal friction creates so much heat that eventually surfaces weld themselves together and an engine seizes.
Motor oil is a complex mix of not only oil but numerous additives that give it the properties it needs to function in today’s modern engines. Over time and during normal driving engine oil gets dirtier and its additives break down. If it gets too dirty it will stop lubricating effectively and an engine will quickly wear and fail. How often you need to change your oil depends on how you drive your vehicle, which type of vehicle you own, and what type of oil you have been using. A general rule of thumb is that engine oil should be changed every 3,000 - 5,000 miles.
If you are unsure if you should change your oil come have Complete Automotive's expert technicians take a look at it for you. Routinely changing your oil is the number one thing one can do to ensure that their engine has a long life.