Purpose and Specifications

LIQUI MOLY 1877 Diesel Flow Fit is a premium fuel additive from the Diesel fließ-fit line, designed to keep your diesel fuel flowing smoothly even in cold weather. This 150 ml bottle treats up to 50 liters of fuel, improving flow and filtering properties down to -31°C, depending on fuel quality. It prevents wax crystal buildup in low-sulfur diesel, ensuring reliable starts and engine performance in winter conditions down to freezing temps.

Key practical benefits include better cold-weather reliability, reduced filter clogging, and protection for your fuel system against low-temp issues. Safe for all diesel engines, including those with turbochargers, catalytic converters, and DPF filters.

When to Use / Replace?

Add every 2,000 km or before winter for best results. Use preventively in cold climates or with low-sulfur fuels to maintain flow. Shelf life is typically 3-5 years when stored in a cool, dry place. One bottle lasts for multiple tanks, making it economical for regular maintenance.

• Pour directly into tank before refueling – mixes automatically.
• Ideal for temps dropping below 0°C to avoid gelling.
• Replace fuel filter at standard intervals (every 20,000-40,000 km) alongside use for peak performance.

FAQ

Can I use LIQUI MOLY 1877 in modern diesels with DPF? Yes, it's fully compatible and helps keep the system clean without harming filters.

How much fuel does one 150 ml bottle treat? Up to 50 liters, perfect for one full tank in most cars.

Does it work year-round or just winter? Best for cold weather, but safe for anytime use with low-sulfur diesel.