Liquid Molys Pro Line Engine Flush is a highly effective detergent additives in Engine Flush clean interior engine before oil change. Removes Deposits residues from all 4-stroke gasoline engines and diesel engines. Dissolves sludge and lacquer and isolates solid particles and liquid contaminants. Improves the combustion process and restores full engine performance. Prevents corrosion of unprotected metal surfaces. Recovers oil lubricating properties. Add to engine oil before engine oil change. Let engine run on idle speed for 10 minutes. Drain oil change oil filter and refill with fresh Liquid Moly engine oil. Fully compatible with all commercially available engine oils.