Liqui Moly Catalytic-System Cleaner 300ml - 8931

Liqui Moly Catalytic-System Cleaner 300ml – 8931

The Liqui Moly Catalytic-System Cleaner is a high-performance fuel additive designed to clean and restore catalytic converters and the overall exhaust aftertreatment system. Its specialised formulation helps dissolve deposits, soot, and combustion residues that can accumulate on catalyst surfaces — improving exhaust flow, reducing emissions, and supporting smoother engine operation.

Supplied in a convenient 300 ml bottle (part number 8931), this cleaner is ideal for use during routine maintenance or before emissions testing to help maintain catalytic efficiency and prolong system life.

Key Features of Liqui Moly Catalytic-System Cleaner

• Catalyst Cleaning Action: Helps dissolve deposits and contaminants on catalytic converter surfaces.
• Reduces Emissions: Supports lower exhaust pollutants by improving catalyst performance.
• Improves Exhaust Flow: Helps restore freer flow through the emission system for smoother engine response.
• Enhances Engine Efficiency: Promotes more complete combustion and reduced back-pressure.
• Easy to Use: Add directly to the fuel tank before refuelling according to dosing instructions.
• Suitable for Petrol & Diesel: Compatible with engines equipped with catalytic converters and exhaust aftertreatment systems.

Applications

• Petrol and diesel vehicles with catalytic converters
• Before emissions testing or MOT inspections
• Engines showing higher emissions or reduced performance
• Routine maintenance to preserve exhaust system health
• Vehicles with prolonged urban or short-trip driving
• Cars, vans, and light commercial vehicles

Technical Specifications

• Brand: Liqui Moly
• Product: Catalytic-System Cleaner
• Part Number: 8931
• Volume: 300 ml
• Type: Exhaust aftertreatment cleaning additive
• Main Benefits: Catalyst cleaning, emission reduction, improved exhaust flow
• Application: Add to fuel tank before refuelling as directed

Why Choose Liqui Moly Catalytic-System Cleaner?

The Liqui Moly Catalytic-System Cleaner 300ml – 8931 provides an effective and convenient solution for maintaining a clean and efficient catalytic converter and exhaust system. Its targeted cleaning action helps reduce emissions, improve engine performance, and support overall exhaust aftertreatment health — making it ideal for regular upkeep or pre-test preparation.