Purpose and Specifications

LIQUI MOLY 5155 Pro-Line JetClean Diesel-System-Reiniger is a highly concentrated 5-liter cleaner designed for diesel fuel systems. It removes tough deposits from injection pumps, high-pressure pumps, nozzles, injectors, and combustion chambers, preventing seizing and gumming for smoother engine performance.

This premium additive protects against wear and corrosion, improves ignition, reduces knocking, and lowers fuel use while cutting emissions. Ideal for all diesel engines, including those with particulate filters, it keeps your fuel system running clean and reliable every day.

• Volume: 5 liters - perfect for workshops, fleets, or heavy use
• Dosage: Mix 1:300 with diesel (about 16.7 ml per liter of fuel)
• Replacement interval: Add every 2,000 km for passenger vehicles to maintain clean injectors
• Shelf life: Up to 3 years unopened in cool, dry storage (5°C to 25°C)

When to Use / Replace?

Use at the first sign of rough idling, poor acceleration, or increased smoke - or every 2,000 km preventively. For trucks and fleets, dose every tank fill to handle high mileage. Replace or refresh treatment every 10,000 km or 12 months for peak efficiency in all temps from -20°C to 120°C engine operation.

Pour directly into your fuel tank before refueling and drive normally - no special tools needed. Safe for daily drivers, long hauls, or winter storage.

FAQ

Q: How often should I use LIQUI MOLY 5155 in my diesel car?
A: Every 2,000 km or per tank for best results, keeping injectors clean and fuel economy high.

Q: Is it safe for modern diesel engines with DPF?
A: Yes, fully compatible - reduces emissions and protects filters without harm.

Q: What if my engine knocks or smokes?
A: Add one dose immediately; it cleans and quiets the engine within a tank or two.