This Engine Flush, Pro-Line, from Liqui Moly, is a high-performance cleaner specifically designed for 4-stroke gasoline and diesel engines. It effectively removes deposits and residues, dissolves sludge and lacquer, and isolates solid particles and liquid contaminants, improving the engine's combustion process. It also helps prevent corrosion and restores the engine's full performance. This gentle yet effective cleaner is suitable for use with diesel particulate filters and is also safe to use with turbochargers and catalytic converters. Its simple application process and environmentally-friendly formula make it a top choice for maintaining and optimizing your engine's performance. One 500 ml can is sufficient for up to 5 liters of oil, and it is recommended to use this flush when