The John Deere MCTY26785 Fuel-Protect Diesel Fuel Conditioner is an all-season additive designed to protect and enhance the performance of diesel engines. This 16-ounce (0.473 L) bottle provides comprehensive fuel system protection, preventing fuel gelling in cold weather, inhibiting corrosion, and improving fuel stability. It also helps to keep injectors clean and lubricated, ensuring optimal engine efficiency and longevity. Suitable for use in all John Deere diesel engines and other diesel-powered equipment, this conditioner is a crucial component for maintaining fuel system health and preventing costly repairs.