Purpose and Specifications

LIQUI MOLY Speed Diesel Additive is a premium fuel system cleaner designed specifically for diesel engines. This 1-liter bottle cleans injectors and the combustion chamber, removes harmful deposits, and prevents corrosion to keep your fuel pump and injectors running smoothly with less wear. It improves fuel atomization for better combustion, leading to quicker acceleration, smoother operation, and stronger performance especially during everyday partial load driving. Your engine starts easier, runs quieter, and uses less fuel while cutting emissions - perfect for low-sulfur diesel and compatible with particulate filters and catalytic converters.

Mix one 1-liter bottle with up to 300 liters of diesel fuel. Add every 2,000 km for top results and long-term protection. Works automatically when poured into the tank. Shelf life is typically 3-5 years when stored in a cool, dry place between 5°C and 30°C.

When to Use / Replace?

Use this additive every 2,000 km or at each refuel for maintenance to prevent buildup and maintain peak efficiency. Ideal if you notice sluggish acceleration, rough idling, higher fuel use, or smoke - it restores original power quickly. Replace the additive treatment every 2,000 km; no need for more frequent use unless storing your vehicle long-term (use 1% concentration for preservation up to 12 months).

• Clean fuel system for reliable starts in cold weather down to -10°C.
• Protects against wear in high-mileage engines over 100,000 km.
• Keeps performance strong year-round without harsh chemicals.