Microbes in the form of bacteria and fungus are present in all diesel fuels. Long periods of fuel storage can create ideal opportunities for microbes to grow in fuel tanks. The first indication of microbial contamination is mucous-like accumulations on fuel-filters and increased requirements for fuel-filter replacement. Microbes can only be removed from the fuel system by use of a diesel fuel biocide.

• Dual-Phase ? effective in both diesel fuel and water as recommended by major diesel engine manufacturers
• Effective as a "quick-kill" biocide and for long-term diesel fuel maintenance
• Kills microbes (bacteria and fungi) that grow in dispersed and free water associated with diesel fuels
• Protects fuel system components against organic acids created by microbial growth ? prevents fuel tank corrosion
• Effective in all diesel fuels, including ULSD and biodiesel
• Treats 320 gallons of fuel