The Duckhams Classic Q 20W-50 Mineral Engine Oil is a premium high-performance choice for keeping your vintage petrol engine running smoothly and efficiently, especially under high-load and hot conditions. This API-approved oil is specifically designed to meet the demanding MIL-L-2104B military standards for performance and reliability. Its formulation provides long-lasting protection and lubrication, ensuring optimal engine performance and reducing friction, wear, and heat. The 5-liter can makes it easy to keep a well-maintained tank, saving you time and effort. With Duckhams' commitment to quality and performance, you can trust that your engine will be well-protected and ready for any challenge.