Purpose and Specifications

LIQUI MOLY Common Rail Additive is a premium diesel fuel treatment designed to protect high-pressure Common Rail and Pump-Injection systems in modern diesel engines. This 250ml bottle treats up to 75 liters of low-sulfur diesel fuel at a 1:300 ratio, delivering superior lubrication to reduce wear on injectors and pumps.

It cleans the entire fuel system, boosts cetane for easier cold starts down to -10°C, and cuts exhaust odors while optimizing combustion for better fuel economy. Add every 2,000 km to keep injectors clean and prevent corrosion, ensuring smooth engine performance even after long storage.

When to Use / Replace?

• Use every 2,000 km or at each fill-up for ongoing protection in passenger diesel vehicles.
• Ideal for cold weather starts, preserving engines during months of inactivity, or when using low-sulfur fuel that lacks natural lubrication.
• Replace treatment interval every 2,000 km; shelf life is 4 years unopened when stored at room temperature (5-30°C).

Frequently Asked Questions

Q: How often should I add it?
A: Add one 250ml can every 2,000 km to your diesel tank for continuous injector cleaning and wear protection.

Q: Does it work in cold weather?
A: Yes, it improves ignition for reliable starts in cold conditions down to -10°C and reduces smoky exhaust.

Q: Is it safe for all diesel engines?
A: Perfect for Common Rail and Pump-Injection diesels; tested safe for catalytic converters and mixes automatically with fuel.