- Fast 5-Minute Engine Cleaning: Heavy-duty motor flush formulated to clean the engine and help free sticky valves and piston rings in as little as 5 minutes.
- Helps Remove Engine Sludge: Breaks down and helps remove sludge buildup that can interfere with proper oil circulation and engine performance.
- Frees Sticky Valves & Rings: Helps loosen sticking internal engine components, allowing motor oil to circulate more freely throughout the engine.
- Removes Gum & Varnish: Helps dissolve accumulated gum, varnish and other internal engine deposits before an oil change.
- Targets Power-Robbing Deposits: Cleans deposits that may restrict proper lubrication and negatively affect engine operation.
- Improves Oil Flow: By cleaning internal deposits, the treatment helps oil flow more freely to critical lubricated engine components.
- Easy Pre-Oil-Change Treatment: Simply designed to be added to the engine oil before changing the oil, making it convenient for routine maintenance.
- Compatible with Petroleum-Based Oils: Formulated to blend with petroleum-based motor oils when used according to product directions.
- Preventive Engine Maintenance: Recommended for periodic maintenance, with the supplied product information suggesting use at least twice a year or every 6,000 miles.
- 12 fl oz Bottle: Convenient 12 fl oz 354 ML treatment size. SKU: MF-141.
Clean accumulated deposits from inside your engine before an oil change with LION Heavy Duty Motor Flush, a fast-acting engine flush formulated to help remove sludge, gum, varnish and power-robbing deposits.
Over time, contaminants and deposits can accumulate inside an engine and interfere with proper lubrication. LION Heavy Duty Motor Flush works with the existing engine oil before an oil change to help break down these deposits and prepare them for removal when the old oil is drained.
Its heavy-duty cleaning action is designed to free sticky valves and rings in as little as 5 minutes, helping motor oil circulate more freely to lubricated areas of the engine. Improved oil circulation can be particularly valuable in engines affected by sludge and deposit buildup.
The formula also helps remove gum and varnish, two common types of internal engine contamination, along with other deposits that may negatively affect engine operation. This makes LION Motor Flush a practical addition to preventive maintenance and scheduled oil changes.
Designed to blend with petroleum-based oils, the treatment is added to the engine oil before changing it. Based on the supplied product guidance, LION Heavy Duty Motor Flush can be used at least twice per year or every 6,000 miles as part of a regular engine-maintenance routine.
For customers searching for an engine flush, motor flush, engine sludge cleaner, internal engine cleaner, oil system cleaner, gum and varnish remover or pre-oil-change engine treatment, LION Heavy Duty Motor Flush provides a convenient solution in one bottle.

