Traces of vanadium in higher-temperature combustion items kind droplets of molten vanadates. These assault the passivation layers on metals and result in substantial temperature corrosion, and that is a priority specifically for inside combustion engines. Molten sulfate and direct particulates even have these types of outcome. 1970 – Tobacco https://broadfar.com/oraco-global-trends-in-heat-not-burn-products/