Purpose and Specifications

LIQUI MOLY 1877 Diesel Flow Fit is a premium diesel fuel additive in a 150 ml bottle that keeps your diesel flowing smoothly even in extreme cold down to -31°C, preventing fuel filter clogs and ensuring reliable starts.

It cleans the entire fuel system, boosts lubrication to cut wear on pumps and injectors, raises cetane for better combustion, and protects against corrosion and fuel aging. One bottle treats up to 75 liters of diesel, with effects lasting up to 2,000 km. Perfect for all diesel engines, including those with DPF filters.

• Prevents wax buildup in cold weather for hassle-free winter driving
• Improves fuel flow and engine performance year-round
• Reduces consumption and emissions with cleaner burning
• Shelf life of 4 years when stored cool and dry

When to Use / Replace?

Add every 2,000 km or with each tank for ongoing protection, especially before winter or if you notice hard starts, rough idling, or power loss. Use preventively in temps below 0°C or for long-term fuel storage like seasonal vehicles.

Replace the additive treatment every 2,000 km to maintain peak fuel system health—no need for more frequent use unless tackling heavy deposits.

FAQ

Is LIQUI MOLY 1877 safe for my DPF-equipped diesel?
Yes, it's fully tested and safe for all modern diesels with particulate filters and catalytic converters.

How much fuel does one 150 ml bottle treat?
It handles up to 75 liters, ideal for a full tank—simple pour-in and drive.

Can I use it year-round or just in winter?
Use anytime for cleaning and protection, but essential below 0°C to keep diesel flowing to -31°C.