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BioGuard Fuel Microbiocides

Bacteria and fungi can grow in diesel fuel tanks causing bio-contamination appearing like a black stringy slime or sludge. This contamination can cause equipment to shut down by plugging filters. This acidic slime and sludge contamination can corrode tanks and engine parts.

ValvTect BioGuard Fuel Microbiocides are EPA registered microbiocides that quickly and effectively kills and prevents the growth of bacteria and fungi found in diesel fuel, heating oil,residual oil,lubricating oil and Gasoline. BioGuard works in as little as 2 - 3 hours.

Typical applications include marine, farm, truck fleet, industrial, home heat, generators, and railroad storage tanks. Formulas are available for both bulk treatment and consumer use. BioGuard Microbiocide for bulk treatment is a concentrated dual soluble formula for use in Gasoline and Diesel available in gallons for ease of handling and storage. Each gallon of the concentrated formula treats between 2500 gallons and 7500 gallons of fuel depending on the application. Call ValvTect Customer Support for treatment recommendations or refer to the container label for details.


These Service Partners offer BioGuard products as part of their overall tank maintenance services.

  • National:
    Service Partner Location Phone Number Website
    Clean Fuels National Keystone, IN 260-346-2500
    KRK Petroleum Lawrence, KS 913-220-6156  
    Tanknology Austin, TX 800-964-1250

  • ValvTect offers these companies as references only.