Purpose and Specifications

Liqui Moly Pro-Line Engine Flush (product code 2425) is a powerful, easy-to-use cleaner that quickly removes sludge, varnish, and carbon deposits from your engine's oil circuit before an oil change. Add one 1-liter bottle to 10 liters of warm engine oil, idle for 10-15 minutes, then drain and replace with fresh oil and filter. This gentle formula restores full engine performance, optimizes oil flow for cold starts down to -45°C, maintains proper oil pressure, and reduces oil consumption without harming seals, turbochargers, catalytic converters, or diesel particulate filters (DPF). It's safe for all 4-stroke gasoline and diesel engines, compatible with all motor oils, and highly economical - effects last up to 50,000 km with regular use.

When to Use / Replace?

Use before every oil change (typically every 10,000-15,000 km or 12 months) to prevent buildup from poor fuel, dirty oil, or hard driving. Ideal if you notice high oil use, rough idling, low power, or smoke - it can improve compression by 0.5-1.5 bars and clean pistons for better sealing. Shelf life is 4 years unopened; store at room temperature. Repeat every oil change for engines over 100,000 km or in extreme conditions like high heat over 100°C or frequent short trips.

• Rapid cleaning in just 10-15 minutes
• Reduces emissions and fuel use
• Boosts reliability for turbo and DPF systems

FAQ

Is it safe for my turbo diesel? Yes, fully tested - protects turbo, DPF, and cats while cleaning gently.

How often should I use it? Before each oil change, especially if over 100,000 km or high oil burn.

Will it fix oil leaks? No, but cleans rings to cut consumption and prevent worsening issues.