Traces of vanadium in significant-temperature combustion products type droplets of molten vanadates. These attack the passivation layers on metals and result in significant temperature corrosion, which happens to be a priority especially for inner combustion engines. Molten sulfate and direct particulates even have these types of impact. 1970 – https://broadfar.com/oraco-pioneering-a-smokeless-future-with-innovative-nicotine-delivery/