Liqui Moly Speed Tec Diesel is a premium fuel additive engineered to deliver noticeably faster throttle response, smoother acceleration, and improved combustion efficiency—especially in the partial-load range where diesel engines spend most of their driving time. Fully compatible with all standard diesel and biodiesel fuels, this formulation cleans the injection system, reduces internal friction, and enhances drivability without affecting the fuel’s cetane rating. Developed for modern diesel engines, including those equipped with diesel particulate filters (DPF) and catalytic converters, Speed Tec Diesel boosts performance while maintaining full emissions-system safety.

• Improved acceleration with faster engine response, especially under partial load
• Cleans the diesel injection system, restoring optimal spray patterns and combustion
• Reduces frictional losses for smoother, more efficient engine operation
• Enhances engine performance and drivability
• Safe for DPF-equipped vehicles and fully tested for catalytic converter compatibility
• Contains no organometallic compounds, ensuring clean burning
• Compatible with all diesel and biodiesel fuels
• Does not alter cetane number, maintaining fuel integrity