Valvoline engine flush is used for soft dissolving of carbon deposits at engine idle run: it removes stubborn deposits just in five minutes. The engine flush is absolutely safe for use as it does not impact hard carbon and soot and does not comprise chlorinated solvents. The engine flush does not have negative impact if it is used according to instructions. It is recommended to check if the oil filter is clogged or not before using the flush when it is applied in the engines with the mileage from 160 000 km and more. It dissolves carbon deposits; cleans the engine within five minutes; cleans clogged oil piping; releases seizing lifters; dissolves deposits which decrease engine power; is safe for gaskets.