Liqui Moly Gasoline System Cleaner 500 ml — Pro-Line concentrated petrol additive, injector & combustion chamber cleaner

Liqui Moly Pro-Line Gasoline System Cleaner is a concentrated 500 ml petrol additive designed to clean injectors, intake systems and combustion chambers to help restore fuel atomization and engine performance.

This professional-strength formula from Germany is made to be added directly to the fuel tank for both injected and carburetted gasoline engines. It combines detergents and lubricants to dissolve varnish, carbon deposits and residual fuel film that reduce efficiency. Use it as a targeted problem-solver for rough idling or fuel-related hesitation, or as a preventative treatment to maintain a clean fuel system over time. The product ships in a 500 ml bottle (SKU 2030) and is part of Liqui Moly's Pro-Line range, intended for workshop-grade maintenance.

How does this cleaner improve engine smoothness?

The additive removes deposits from injectors, intake valves and combustion chambers that cause uneven spray patterns and incomplete combustion. By restoring correct fuel atomization and cleaner combustion surfaces, engines run with fewer misfires, smoother idling and more consistent throttle response.

• Clears injector nozzles and spray holes for uniform fuel delivery
• Breaks down carbon deposits on valves and chambers
• Helps reduce hesitation during acceleration
• Suitable for both carburetted and fuel-injected systems

When should I use Liqui Moly Pro-Line Gasoline System Cleaner?

Use it whenever you detect fuel-related symptoms—such as poor acceleration, rough idle, or elevated fuel consumption—or as a regular preventative service interval. A single 500 ml treatment is formulated for a full tank application depending on tank size; follow the product instructions for dosing with your vehicle's fuel volume.

• Recommended for symptom-driven cleaning or scheduled maintenance
• One 500 ml bottle treats most standard passenger car tanks when dosed correctly
• Compatible with lead-free petrol only—follow manufacturer guidance

Is this safe for my engine and fuel system components?

Liqui Moly designs its additives to be chemically compatible with common fuel system materials and seals used in modern engines. This Pro-Line cleaner contains additives that clean without aggressive solvents that would harm pump or injector components when used as directed.

• Formulated for injected and carburetted gasoline engines
• Contains detergents and lubricants to protect moving parts during treatment
• Manufactured in Germany to professional-quality standards

How do I apply this product correctly?

Pour the required dose into the fuel tank before refuelling so the additive mixes evenly with fresh petrol. For best results, run the engine and drive under normal conditions to allow the cleaner to circulate through injectors, valves and combustion chambers.

• Add directly to the fuel tank according to the label dosing instructions
• Refuel immediately after adding to ensure proper mixing with petrol
• Drive normally after treatment to let the product work through the system

Product details: 500 ml bottle, SKU 2030, package dimensions 2.24" L x 2.24" W x 7.96" H, item weight approximately 0.9 pounds. Country of origin: GERMANY. This Pro-Line concentrate is supplied in a workshop-suitable format for reliable, repeatable maintenance results.

Who is this for? Liqui Moly Pro-Line Gasoline System Cleaner is aimed at mechanics, fleet managers and car owners who want a professional-level fuel system treatment. It's appropriate for anyone maintaining petrol engines—both older carburettor-equipped vehicles and modern fuel-injected cars—who needs an effective cleaner to address deposit-related faults or to perform preventive upkeep without replacing components prematurely.