Purpose and Specifications

Liqui Moly Engine Flush Plus (2657) is a highly effective 300 ml cleaning additive that safely removes stubborn sludge, deposits, and residues from your gasoline or diesel engine's oil system. Add it to warm engine oil before your oil change to suspend oil-soluble and insoluble contaminants, allowing them to drain out completely with the old oil. This gentle formula does not harm common seals, gaskets, turbochargers, catalytic converters, or particulate filters, ensuring optimal engine performance and reduced wear.

• One 300 ml can treats up to 6 liters of oil, perfect for most passenger cars.
• Works at normal operating temperatures (around 80-100°C) for rapid, gentle cleaning in just 10 minutes of idling.
• Compatible with all commercial motor oils; use every 12,000 km or 12-month oil change interval for best results in high-mileage or neglected engines.
• Shelf life: 4 years unopened when stored in a cool, dry place.

When to Use / Replace?

Use Engine Flush Plus before every major oil change, especially if your vehicle has over 100,000 km, irregular maintenance, or signs of poor oil flow like low pressure or noisy operation. It's ideal for modern engines with fine oil passages that can clog with buildup. Run at idle for 10 minutes at operating temperature, then drain oil and replace filter immediately—no driving needed. Repeat every oil service (typically 10,000-20,000 km or 12 months) to keep your engine running smoother, cooler, and longer.

FAQ

Q: Is it safe for my turbocharged diesel engine?
A: Yes, it's fully tested for turbos, catalysts, and DPFs—gentle cleaning without disassembly.

Q: How often should I use it?
A: Every oil change (12,000 km/12 months) prevents buildup in high-mileage vehicles.

Q: Can I drive after adding it?
A: No, idle only for 10 minutes before draining to avoid dislodging debris while driving.