Liqui‑Moly Oil Smoke Stop is a specialised engine oil additive developed to reduce oil consumption in both petrol and diesel engines, particularly those with higher mileage or increased wear. It works by improving the sealing effect at piston rings and valve guides, helping to control oil loss and combustion-related smoke. This formulation effectively prevents blue exhaust smoke and oil mist, stabilises oil viscosity, and counteracts viscosity breakdown caused by engine wear. By improving compression and reducing mechanical noise, Oil Smoke Stop helps restore smoother engine operation while providing additional protection for worn components. Suitable for use in engines with catalytic converters, this additive also helps extend catalyst service life by reducing oil-related contamination.

• Reduces oil consumption in petrol and diesel engines
• Helps prevent blue, smoky exhaust fumes
• Improves sealing at piston rings and valve guides
• Stabilises loss of oil viscosity
• High shear stability for long-lasting effectiveness
• Increases compression ratio
• Reduces engine noise caused by wear
• Provides extra protection for high-mileage engines
• Safe for use with catalytic converters
• Ideal For: High-mileage engines, vehicles experiencing oil burning or blue exhaust smoke, worn engines with increased oil consumption, and preventative maintenance to help extend engine life.