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Product Overview & PurposeWhat it isThe MOTUL MTCD-020 is a fuel-system additive for petrol (gasoline) engines—often referred to as a “system cleaner” or “engine flush” product. It's specifically formulated to clean carbon deposits, varnish, and sludge from fuel injectors, intake valves, combustion chambers, and other internal engine components while you drive.Key benefits:Breaks down and dissolves carbon deposits and varnishHelps suspend the dissolved particles in fuel so they can be burned off during normal operationProtects fuel system components from rust and corrosionStabilizes fuel to prevent oxidation and degradationBoosts octane number, improving combustion efficiency