MAATSEN Liquii Moly Engine Flush 300 ml — 2‑Pack Concentrated Cleaner for Gasoline & Diesel Engines, Seal-Safe

MAATSEN Liquii Moly Engine Flush 300 ml (2 pack) is a concentrated engine-cleaning fluid that suspends and loosens oil-soluble and insoluble deposits so they can be removed at the next oil change.

Engine deposits—sludge, varnish and sticky residues—reduce oil circulation, increase wear and limit performance. This two-bottle set contains 300 ml units formulated to be added to the engine oil before an oil change; within a short running period the product breaks down and suspends contaminants so they leave with the drained oil. The formula is suitable for both gasoline and diesel engines, compatible with common sealing materials, and safe for toothed belts that run in oil. Note: it is not intended for motorcycles with wet clutches.

How do I use this engine flush in my car?

Add one 300 ml bottle to the engine oil during regular driving before your scheduled oil change. Run the engine for the manufacturer-recommended short interval (typically 10–20 minutes under normal operating temperature) so the cleaning agents circulate and suspend deposits. Then drain the oil and replace the oil filter to remove loosened residues.

• Add 300 ml per service or per up to 6 liters of oil.
• Operate the engine briefly at normal temperature after adding.
• Perform a full oil and filter change to remove suspended contaminants.

What benefits will I notice after using this engine flush?

After flushing, you should see improved oil flow, cleaner oil passages and reduced deposit-related drag on moving parts. That cleaner oil environment helps the fresh oil perform as designed, which can translate to steadier engine behavior and potentially reduced wear over time.

• Restores clearer oil flow and circulation.
• Helps fresh oil reach designed protection levels faster.
• Removes both oil-soluble and oil-insoluble residues.

Is this product safe for my engine’s seals and belt components?

Yes — the formulation is designed not to attack common sealing materials found in modern engines. It is also safe for engines that use toothed belts running in oil. However, avoid using it in motorcycles that require wet-clutch compatibility.

• Compatible with common rubber and synthetic seals.
• Approved for toothed belts that run in oil.
• Not suitable for wet-clutch motorcycle applications.

How much product do I need and what’s included in the pack?

This offering contains two 300 ml bottles; each 300 ml dose treats engine oil volumes up to approximately 6 liters. Use one bottle per service if your engine holds up to that amount, or adjust proportionally for larger oil capacities.

• 2-pack of 300 ml bottles — convenient for two services or for two vehicles.
• Each 300 ml effective for up to about 6 liters of oil.
• Economical option for regular maintenance or multiple cars.

Who is this for: MAATSEN Liquii Moly Engine Flush suits car owners, independent mechanics and fleet operators who want a simple, non-disassembly method to remove sludge and deposits before an oil change. It’s aimed at vehicles with gasoline or diesel engines (including those with toothed belts running in oil) but is not intended for motorcycles with wet clutches. If you perform regular oil and filter changes and want to maximize fresh-oil effectiveness, this concentrated two-pack provides a cost-effective maintenance boost.