Marvel Mystery Oil Gas Treatment is designed to enhance your vehicle’s performance by adding it to gasoline for better gas mileage. This treatment lubricates like lead, helping to prevent sticking rings and valves while improving compression and reducing cylinder wear. It is safe for use with catalytic converters, ensuring no harm to your vehicle’s emissions system. Additionally, Marvel Mystery Oil can be added to the crankcase to extend the life of your engine oil, providing extra protection in both hot and cold weather conditions. For optimal results, add 8 ounces per tank of gas or 20% of the total crankcase capacity during oil changes. This product is also i for marine engines, making it a versatile choice for various applications. Model Number: MM13R