A diesel biocide and lubricity additive. Recommended by name by major diesel engine manufacturers, Biobor JF is the most widely used and trusted biocide to kill existing algae and bacteria growth in contaminated tanks plus keep fuel microbe free with continuous use. Works equally well in the fuel and water phases for a more effective kill. Regular use will dramatically reduce fuel filter plugging, slime and fuel system corrosion. Biobor JF also adds lubricity back to ULSD exceeding OEM standards, protecting injectors and fuel pumps. 1 oz treats 80 gallons.