Product Short Description: RXSOL ORG VI 28 Vanadium Inhibitor is used in blending crude and heavy oils with high concentrations of ash and corrosives that leads to encrustation and fouling. Product Description: RXSOL ORG VI 28 Vanadium Inhibitor is used in blending crude and heavy oils with high concentrations of ash and corrosives that leads to encrustation and fouling.