Jiffy Lube specializes in vehicle preventive maintenance to help keep your vehicle running right, and help you leave worry behind. The core offering of Jiffy Lube is the Jiffy Lube Signature Service? Oil Change, a service that offers customers more than just a standard oil and filter change. A preventive maintenance program that enhances the reliability and longevity of a vehicle, the Jiffy Lube Signature Service? Oil Change is a comprehensive vehicle preventive maintenance service that focuses on four key areas: Change, Inspect, Check/Fill and Clean.