How often should you change your oil?

The California Integrated Waste Management Board has turned myth buster. The myth? That you need to change your car’s oil every 3,000 miles.

The state agency claims that doing so not only costs you more, but also hurts the environment — and does nothing for your vehicle.

Don’t believe it? Read more about the “3,000-mile myth.” If the site convinces you, maybe you can save a few bucks.

And if nothing else, you can at least save yourself a trip to the glove box and find out how often your car’s manufacturer recommends oil changes. The site includes a full listing of vehicles and their manufacturer guidelines.