. Oil modifications for the duration of your ownership are consisted of in the cost when you purchase or rent any previously owned or brand-new vehicle or truck. All existing Cadillac products, and many other vehicles, need artificial oil to keep their warranty in force. Since each artificial oil change costs approximately $100, we believe you'll discover our offer to be a meaningful benefit.In the last 35 years, we've sold more Cadillacs than other dealership in Kentuckiana.Come by today and discover why! -.