Purpose and Specifications

LIQUI MOLY Pro-Line Diesel 400ml is a premium fuel additive designed to clean your diesel engine's fuel system, including injectors and combustion chambers. It removes stubborn deposits, boosts cetane for smoother starts and less knocking, and protects against corrosion and wear. One 400ml can treats up to 70 liters of diesel fuel, perfect for cars, trucks, and heavy equipment. Use it every 2,000 km for ongoing protection or during routine maintenance.

Practical benefits include restored power, quieter engine operation, better fuel economy saving up to 3 liters per hour in high-load use, and longer injector life - no replacements needed after two years in tested stationary engines. Fully compatible with all diesel fuels, including low-sulfur and biodiesel, and safe for particulate filters.

When to Use / Replace?

Add directly to the fuel tank before refueling. Use preventively every 2,000 km or monthly for daily drivers, after fuel system repairs, or if you notice rough idling, smoke, or power loss. Ideal for engines sitting idle or under heavy loads. Shelf life is 3-5 years in cool, dry storage (5-25°C). No need to 'replace' - reuse with every tank for continuous cleaning and efficiency.

• Cleans injectors and fuel lines for optimal combustion
• Reduces emissions and smoke before tests
• Prevents costly injector failures
• Improves MPG and acceleration