Killem is a water soluble product, EPA registered as a biocide for the control of bacteria and fungi growth in oils and refined fuels. Approved for use in California. Killem will control microorganisms in fuel oil storage tanks, fuel oil and other refined or partially refined oils. Killem is an EPA FIFRA registered antimicrobial that mixes soley in the water phase of the fuel storage tank; therefore, is not a fuel additive. EPA verification letter can be provided on request. Used regularly, Killem will reduce the following: Tank corrosion Slime mats Odors Fuel oil filter deposits and plugging Vehicle fuel tank deposits and corrosion Fuel-water separator deposits Injector plugging Excess carbon deposit and exhaust gas smoke Product Uses: Killem is a highly effective fungicide and bactericide for use in fuel oil (no. 2 oil, intermediate fuel oil and No. 6 oil), lubricating oil and hydraulic fluids in marine environments.