Purpose and Specifications

LIQUI MOLY Pro-Line Engine Flush is a professional-grade engine cleaning additive designed to remove harmful deposits before an oil change. It works on both gasoline and diesel engines, including turbocharged and naturally aspirated models.

What it does:

• Dissolves sludge, varnish, and carbon buildup inside the engine
• Cleans oil passages and restores proper oil flow, especially important after cold starts
• Improves combustion efficiency and engine performance
• Protects metal surfaces from corrosion
• Ensures fresh oil can work at full strength immediately after an oil change
• Safe for use with turbochargers, catalytic converters, and diesel particulate filters

Key Specifications:

• Volume: 500ml (one can treats 3–5 liters of motor oil)
• Suitable for: All 4-stroke gasoline and diesel engines
• Application temperature: Engine operating temperature (warm engine)
• Treatment time: 10–15 minutes at idle speed
• Compatible with: All commercial motor oils and belt-driven systems

When to Use

Use LIQUI MOLY Pro-Line Engine Flush before every oil change if your engine shows signs of:

• Rough idle or hesitation during acceleration
• Increased oil consumption
• Poor cold-start performance
• High mileage (over 100,000 km) with original oil never flushed
• Extended service intervals or heavy-duty driving conditions

Application Process:

1. Add the entire 500ml can to your engine oil while the engine is warm
2. Run the engine at idle for 10–15 minutes (longer if heavily contaminated)
3. Drain the old oil and replace the oil filter
4. Refill with fresh motor oil

Frequently Asked Questions

Q: How often should I use engine flush?
A: Once per oil change is recommended. For engines with heavy sludge buildup, you may use it more frequently, but typically 1–2 times per year during regular maintenance is sufficient.

Q: Is it safe for my engine?
A: Yes. LIQUI MOLY Pro-Line Engine Flush is gentle and does not damage seals, gaskets, or engine components. It is safe for modern engines with turbochargers and emission control systems.

Q: Can I use this in a motorcycle?
A: No. This product is designed for 4-stroke automotive engines only and is not suitable for motorcycles.