Liqui Moly Pro-Line Gasoline System Cleaner 500 ml — Concentrated injector & combustion chamber cleaner, restores performance

Liqui Moly Pro-Line Gasoline System Cleaner is a concentrated 500 ml additive designed to clean injectors, combustion chambers and restore correct fuel atomization in petrol engines.

Made in Germany and formulated for both fuel-injected and carbureted gasoline engines, this Pro-Line concentrate removes deposits that form on injectors, intake valves and combustion chambers. It helps return lost performance, reduce rough idling and supports more consistent fuel delivery without altering the engine’s design or requiring mechanical work. Use it as a targeted problem solver for visible drivability issues or as part of routine preventive maintenance.

How does this cleaner improve engine performance?

The formula targets carbon and varnish build-up that interferes with spray pattern and combustion. By dissolving and carrying away deposits, it helps restore the injector spray and more complete fuel burn, which often translates to smoother running and steadier idling.

• Restores proper injector spray patterns and fuel atomization
• Reduces deposits on intake valves and combustion chamber surfaces
• Helps even out idling and reduces hesitation during acceleration

When should I add this to my fuel system?

Use the 500 ml bottle according to the manufacturer instructions—typically as an additive to a full tank of petrol—or whenever drivability worsens. It’s suitable for occasional corrective treatments and regular preventive intervals to keep injectors and combustion areas cleaner between services.

• As a problem solver when there’s rough idling or reduced throttle response
• For preventive maintenance every few thousand miles or per service schedule
• Before emissions tests or after extended storage to refresh fuel system function

Is it compatible with all gasoline engines and fuel system types?

Yes—this cleaning concentrate is formulated for use in both injected and carbureted petrol engines. It works with conventional petrol and typical modern fuel systems without changing required octane or engine settings.

• Safe for multi-point and direct injection systems when used as directed
• Also suitable for carbureted engines to dissolve varnish and deposits
• No engine modification or special tools required for application

How do I apply the Pro-Line Gasoline System Cleaner?

Application is simple—add the contents of the 500 ml bottle to a full tank of petrol as specified on the label. For persistent issues, a second treatment or professional inspection may be recommended to address underlying mechanical causes beyond deposits.

• Pour additive into a full tank of petrol to ensure correct dilution
• Drive normally for several tank cycles to allow the formula to circulate
• Follow safety guidance on the bottle and avoid over-dosing

Who is this product for? Liqui Moly Pro-Line Gasoline System Cleaner is intended for car owners, mechanics and fleet managers who want a reliable, ready-to-use additive to remove fuel system deposits and help maintain engine smoothness. It’s a practical choice for those looking to recover lost responsiveness, prepare vehicles for inspection, or include targeted fuel system care in routine maintenance plans. Note that persistent mechanical faults should be diagnosed and repaired by a qualified technician; this cleaner addresses deposit-related performance issues rather than mechanical failures.

Product specifics:

• Volume: 500 ml
• Origin: Germany
• Model / SKU: 2030
• Package size and weight: 2.24" L x 2.24" W x 7.96" H, 0.9 pounds