Purpose and Specifications

Liqui Moly 5200 Oil Sludge Flush is a powerful cleaner that quickly removes black sludge, lacquer deposits, and combustion residues from your gasoline or diesel engine. This 300 ml tin treats engines up to 5 liters of oil capacity, safely working with all common motor oils, turbochargers, catalytic converters, and diesel particulate filters (DPF).

Its special blend of detergents and dispersants breaks down oil-insoluble gunk caused by heat, oxidation, blow-by gases, and acids, restoring smooth engine performance without harsh scrubbing. Add it 200 km before your oil change, drive normally (avoid full throttle), then drain the old oil and replace the filter for a clean crankcase.

When to Use / Replace?

• Use before every oil change to prevent buildup, especially in high-mileage engines over 100,000 km or those with irregular maintenance.
• Ideal for engines showing sludge from short trips, poor fuel quality, or extended storage; repeat for heavy contamination.
• Shelf life is 4 years unopened; store in a cool, dry place between -10°C and 30°C.
• Oil change interval remains the same; use every 10,000-15,000 km or 12 months as per your vehicle manual.