Traces of vanadium in significant-temperature combustion products and solutions type droplets of molten vanadates. These attack the passivation layers on metals and lead to superior temperature corrosion, which is a priority especially for inner combustion engines. Molten sulfate and lead particulates also have this kind of impact. 1600 – https://broadfar.com/oraco-pioneering-a-smokeless-future-with-innovative-nicotine-delivery/