... of solid-state products, without any harm to the engine, only once used, eight years’ effect! 2.Product ... , it will not dissolve the inside metal of engine too, this product’s ceramic components will not ... realize the effect as soon as possible, pls remain 20% fuel per tank , if not,pls refuel to ... 800 km later or other machine turn on 15-20 days, these phenomena will disappear gradually, then we ...