Generic Liquii Moly Pro-Line Engine Flush 500 ml — 3-Pack Concentrated Sludge & Varnish Remover

Liquii Moly Pro-Line Engine Flush is a concentrated detergent that loosens and removes sludge, varnish and deposits from 4‑stroke gasoline and diesel engines before an oil change.

Use this pre‑oil‑change treatment to dissolve built-up contaminants inside the crankcase and oil circuit so fresh oil and a new filter can protect moving parts more effectively. The formula isolates solid particles and liquid residues, supports combustion efficiency and leaves internal metal surfaces protected against corrosion. It is designed to be fully compatible with all commercially available engine oils, seals and catalytic converters.

How do I use Liquii Moly Pro-Line Engine Flush safely?

Add the 500 ml bottle to the existing engine oil, run the engine at idle for about 10 minutes, then drain the oil, replace the oil filter and refill with fresh oil. Avoid prolonged idling beyond the recommended time to reduce stress on an aged engine. Dispose of the used oil and flush residues according to local regulations.

• Pour entire 500 ml bottle into warm engine oil before shutdown.
• Run engine at idle for approximately 10 minutes per instructions.
• Change oil and filter immediately after draining to remove dissolved residues.
• Suitable for both gasoline and diesel 4‑stroke engines.

What benefits can I expect after using this engine flush?

The flush breaks down sludge and lacquer, helping to restore oil flow and recover some lubricating properties of an engine that has accumulated deposits. While it doesn't replace mechanical repair, it helps the new oil work more efficiently and can reduce deposit‑related noise or rough idling in many engines.

• Removes sludge, varnish and liquid contaminants from oil passages.
• Helps improve oil circulation and restores oil film performance.
• Reduces potential combustion inefficiencies linked to deposits.

Is Liquii Moly Pro-Line Engine Flush compatible with my vehicle?

The formula is formulated to be neutral toward seals and common engine materials and is safe for use with catalytic converters. It is compatible with all commercially available engine oils, so it can be used across a wide range of passenger cars, light commercial vehicles and work equipment that use 4‑stroke gasoline or diesel engines.

• Neutral to engine seals and typical elastomers.
• Safe for vehicles with catalytic converters and modern emission systems.
• Works with synthetic, semi‑synthetic and mineral oils.

When should I skip an engine flush or seek professional help?

Do not use an engine flush if the engine shows signs of severe oil leaks, extremely degraded seals, or if the vehicle manufacturer advises against additives. If your engine has very high mileage with metal wear, heavy water contamination, or mechanical symptoms beyond deposits, consult a mechanic before using a chemical flush.

• Avoid use if active oil leaks or major seal damage are present.
• Consult a technician for engines with abnormal metal wear or coolant/oil mixing.
• Follow manufacturer service guidelines for warranty compliance.

Who is this for: Liquii Moly Pro-Line Engine Flush 500 ml (3 pack) is aimed at DIYers, independent workshops and fleet managers who perform regular oil maintenance and want a reliable, fast-acting detergent to clean the engine interior before an oil change. It suits owners of gasoline and diesel 4‑stroke engines who need a product compatible with modern oils and emission systems and who follow the recommended use procedure to avoid unintended complications.