High-efficiency flushing oil formulated from high-quality base oil with a rich additive package containing boron, magnesium, phosphorus, zinc, and other active elements. This composition effectively dissolves and suspends oil deposits. Unlike most analogues, FQ Flushing Oil contains virtually no alkaline components, ensuring safety for rubber and plastic engine parts without any loss of high cleaning power. FQ Flushing Oil removes high-temperature carbon deposits and varnish, cleans stuck valves and rings, helps reduce operating temperature in the engine's hottest zones, and its completely transparent color allows for visual assessment of the contamination level flushed from the engine. It is ideal for engine flushing during routine maintenance or when switching between types or brands of motor oil.