Purpose and Specifications

LIQUI MOLY Diesel Purge is a powerful 0.5-liter cleaner designed for diesel engines, removing deposits from injection nozzles and combustion chambers to restore smooth performance. It boosts cetane for better ignition, eliminates knocking and idling issues, cuts exhaust smoke, and protects against corrosion for reliable operation in all diesel engines, including those with turbochargers, catalytic converters, and DPF filters.

• Cleans fuel system fast: Run directly through fuel lines for intensive cleaning or add to tank preventively.
• Restores power: Improves starting, acceleration, and fuel economy by clearing clogged injectors.
• Shelf life: Up to 5 years unopened when stored in a cool, dry place.

When to Use / Replace?

Use Diesel Purge every 10,000-20,000 km or during fuel filter changes to prevent deposits, especially with poor-quality diesel. For heavy contamination like rough idling or smoke, apply a shock treatment by running the engine unmixed on the additive until nearly empty, repeating if needed. Ideal for engines operating in temps from -20°C to 120°C.

FAQ:

Q: How often should I use it preventively?
A: Add to fuel every 10,000 km or at oil change intervals to keep injectors clean and maintain efficiency.

Q: Is it safe for modern diesels with DPF?
A: Yes, fully compatible and helps optimize emissions without harming filters or turbos.

Q: What if my engine still knocks after one use?
A: Repeat the process after a few days of normal driving for tougher deposits.