Purpose and Specifications

LIQUI MOLY Diesel Smoke Stop is a powerful 150ml fuel additive designed for diesel engines. It accelerates soot burn-off to drastically cut exhaust smoke, black puffing, and unpleasant odors right after adding it to your tank. This cleaner keeps injectors and the engine spotless, prevents sticking parts, eliminates diesel knock, and boosts performance while protecting against rust.

Mix ratio: One 150ml can treats 50 liters of diesel (1:333 ratio). Pour directly into the tank before refueling. Works in all diesel cars, trucks, buses, and machinery without particulate filters. Safe for biodiesel blends, self-mixes, and leaves no harmful residues or heavy metals.

When to Use / Replace?

Use at the first sign of smoke, rough running, or knocking – especially on high-mileage engines over 50,000 km. Add every refuel (every 2,000-5,000 km) for ongoing clean combustion and fewer repairs. Effective in temps from -20°C to 120°C engine operation. Shelf life: 4 years unopened; use within 2 years once opened for best results.

• Cuts smoke immediately, noticeable after 100-500 km.
• Reduces repair needs by cleaning injectors on the go.
• Optimizes for emissions tests year-round.

Q: How soon does it stop smoke?
A: Fully effective right after adding; drivers see clear exhaust after 100-500 km of driving.

Q: Safe for my daily diesel car?
A: Yes, perfect for cars, vans, and trucks without DPF filters. Add every tank for smooth, quiet running.

Q: How often should I add it?
A: Every refuel or every 2,000 km prevents buildup from poor fuel quality.