Fuel Your Drive! 🚀 Trusted by industry giants like GM, Ford, and Deere. Developed by a leading fuel injection equipment manufacturer. Meets Cummins L10 Superior Test standards for ultimate cleanliness. Engineered for peak efficiency, this additive is your diesel's best friend. Perfect for any diesel fuel-related challenge, all year round. OEM Approved All-Season Use Performance Tested The Stanadyne Diesel Performance Formula 38566 is a premium 64-ounce diesel fuel additive, designed to enhance performance and cleanliness in diesel engines. Approved by major OEMs, it tackles a wide range of diesel fuel issues, ensuring optimal engine efficiency and longevity.