Purpose and Specifications

LIQUI MOLY 5123 Pro-Line Diesel Particulate Filter Protection is a premium fuel additive designed to keep your diesel particulate filter (DPF) clean and reliable. This 1-liter can treats up to 300 liters of diesel fuel, ensuring optimum combustion that cuts soot formation by promoting cleaner burning right from the start.

Key practical benefits:

• Reduces soot buildup to prevent DPF clogs, avoiding costly repairs that can run thousands in downtime and fixes.
• Makes short trips and city driving safer by aiding DPF regeneration, even in stop-and-go traffic where filters struggle most.
• Lowers emissions for passing inspections easily and extends DPF life up to 100,000 km with regular use.
• Safe for all modern diesel systems, including catalytic converters and oxygen sensors.

Add every 2,000 km before refueling for steady protection. Shelf life is 4 years when stored in a cool, dry place between 5°C and 30°C.

When to Use / Replace?

Use at every 2,000 km interval or before emissions tests to maintain peak performance. Ideal for vehicles doing frequent short trips under 10 km or city routes where DPF regeneration is tough. If warning lights flash or power drops, add immediately for quick soot reduction. Replace the additive container when empty; no need to change more often than your fuel filter service every 30,000 km or 24 months.

FAQ:

Can I use this in any diesel car? Yes, it's perfect for all diesel vehicles with DPF, from daily commuters to long-haul trucks, as long as you follow the 2,000 km dosing.

Will it fix a clogged DPF right away? It prevents and reduces soot over time with regular use; for severe clogs, pair with professional service but expect noticeable improvement after 2-3 tanks.

Is it safe for the environment? Absolutely, it cuts soot emissions and supports cleaner combustion without harming aquatic life when used as directed.