The Red Line Oil 15W50 Fully Synthetic Engine Oil is a high-performance motor oil designed for use in gasoline and diesel engines. It is formulated with fully synthetic base oils and advanced additives to provide superior protection and performance. This oil is suitable for use in both high-performance and everyday driving conditions, and is especially recommended for turbocharged or supercharged engines. It comes in a 1 gallon container and meets or exceeds all major industry standards for engine oil.