The type of oil used by Grease Monkey varies as it depends on the specific requirements of each vehicle. They typically use high-quality synthetic or conventional motor oil. Synthetic oil offers better performance and protection at higher temperatures and under extreme conditions. It also enhances fuel efficiency and engine cleanliness. Conventional oil, on the other hand, is more economical and suitable for vehicles with typical driving conditions. Grease Monkey's skilled technicians will assess your vehicle's needs and select the appropriate oil viscosity and type to ensure optimal engine performance. Using the right oil is crucial for maintaining the longevity and efficiency of your engine, so trust Grease Monkey's expertise in oil selection and maintenance for your vehicle.