transfer flow|SKU:070CH33291

Transfer Flow Killem Biocide 16 oz — EPA-Approved Diesel Fuel Sanitizer

Stop Fuel System Corrosion Before It Starts

Kills bacteria on contact — EPA-approved formula works immediately
Stops filter slime buildup — Prevents clogging from microbial growth
Protects any diesel tank — Works in OEM and aftermarket systems
Sanitizes entire fuel system — One 16 oz bottle treats full tank
  • Free Shipping -- Ships free to your location via standard delivery

$47.00

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In the box

  • 1× Transfer Flow Killem Biocide 16 oz
Transfer Flow Killem Biocide 16 oz
Transfer Flow Killem Biocide 16 oz — EPA-Approved Diesel Fuel Sanitizer
$47.00

Stop Fuel System Corrosion Before It Starts

Low sulfur diesel and biodiesel blends vary dramatically between stations, creating ideal conditions for bacteria and fungi growth. That slime on your fuel filters isn't just an annoyance — it promotes tank corrosion and leads to costly fuel system failures. Killem is an EPA-approved biocide that kills bacteria on contact and sanitizes your entire fuel tank. A field-proven, code-compliant additive for any diesel operation that can't afford downtime from contaminated fuel.

FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT
EPA-Approved Biocide
Kills on Contact
Sanitizes Full Tank
16 oz Bottle
16 oz
Treatment Size
EPA
Approval Status
All Diesel
Engine Compatibility
Even a Perfectly Spec'd Tank Can't Survive Internal Microbial Corrosion

Even a Perfectly Spec'd Tank Can't Survive Internal Microbial Corrosion

The enemy isn't always a failed inspection or wrong bung placement. Sometimes it's the bacteria growing inside your diesel fuel — silently promoting corrosion in any tank, OEM or aftermarket. Low sulfur diesel and biodiesel blends create ideal conditions for fungi and slime buildup that clogs filters and eats away at your containment. That's why our pre-offer spec review doesn't stop at UL listings and bung configurations. If your application involves biodiesel blends, long-term storage, or high-humidity environments, we flag biocide treatment as a recommended preventive measure — before your tank investment gets compromised from the inside out.

EPA-Approved Formula Kills Bacteria on Contact

EPA-Approved Formula Kills Bacteria on Contact

Killem biocide carries EPA approval, which means it's verified to do exactly what it claims — kill bacteria and fungi in diesel fuel systems on contact. No guessing, no hoping the off-brand treatment works. One 16 oz bottle sanitizes your entire fuel tank, eliminating the slime buildup that clogs filters and forces premature filter changes. It works in any diesel engine and any tank system, including aftermarket installations. For fleet operations running biodiesel blends where microbial growth risk is highest, Killem is a field-proven preventive measure that costs far less than a single clogged filter downtime event.

Prevent Costly Fuel System Failures With a Single Bottle

Prevent Costly Fuel System Failures With a Single Bottle

There are no microbial standards for diesel fuels sold at retail stations. Quality varies station to station, and every fill-up introduces unknown bacteria and fungi risk into your tank. Left untreated, that contamination promotes corrosion, clogs fuel filters, and can trigger complete fuel system failures that pull vehicles off the road. Killem biocide addresses the root cause — not the symptom. Add it to your fuel tank to kill existing contamination and sanitize the system. For fleet managers running multiple diesel vehicles, keeping Killem on hand is a straightforward, industrial-grade preventive step that protects your fuel investment tank by tank.

Compatibility Check

Verify Killem is right for your fuel system before ordering.

  • Equipment runs on low sulfur diesel fuel
  • Equipment runs on biodiesel blend fuel
  • Fuel filters show slime buildup or clogging

Where Killem Performs

Any diesel operation dealing with fuel contamination risks.

Fleet Truck Fuel Systems
Farm Equipment Tanks
Construction Equipment
Backup Generator Tanks

Full specifications

At a glance

Dimensions
16 oz
Warranty
See product page
Full specifications5 data points across 4 categories

Dimensions

Size16 oz

Power & Performance

ApplicationSee product page

Materials

FormulationSee product page

Compliance & Warranty

EPA ApprovalYes
WarrantySee product page

The Tank Vault Promise

Every product we carry is vetted for real-world performance and backed by straightforward support.

Compliance Documentation IncludedEPA approval documentation provided with your order — no chasing the manufacturer afterward.
Ships FreeFree shipping on every order, straight to your job site or facility.
30-Day Hassle-Free ReturnsIf it doesn't meet your needs, contact us immediately for a no-runaround resolution.
★★★★★
“Started noticing slime on our secondary fuel filters every two weeks — trucks losing power on the highway. Added Killem to our bulk diesel tank and within a month the filter change interval went back to normal. $47 bottle saved us thousands in downtime and filter replacements. Now it's part of our standard fuel maintenance rotation.”
M
Mike L.Fargo, ND

Did you know there are no microbial standards for diesel fuels? The quality of low sulfur diesel and biodiesel blends can vary dramatically from one station to the next, which means more opportunity for bacteria and fungi growth in your diesel fuel and slime build up on your fuel filters.

This aggravating bacteria is a problem for anyone with a diesel engine as the bacteria will grow and promote corrosion in any tank, not just aftermarket tank systems.

But don’t worry, we can help you avoid those costly fuel system failures with Killem biocide. Killem is an EPA-approved biocide that kills bacteria on contact and sanitizes your entire fuel tank. Add a bottle of Killem to your order today and keep that nasty build up away!

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      Frequently Asked Questions

      Yes. Killem carries EPA approval as a biocide for diesel fuel systems. This isn't an unverified additive — it's a registered treatment verified to kill bacteria and fungi on contact. For fleet managers who need documented fuel maintenance practices, EPA approval gives you a defensible record that your fuel system treatment meets federal standards.
      Yes. Killem biocide works in any diesel fuel tank — OEM or aftermarket. The bacteria that cause microbial corrosion and filter slime don't discriminate by tank manufacturer. Killem sanitizes the entire fuel system regardless of whether you're running a factory tank or an aftermarket installation from Newberry or Containment Solutions. If you're adding Killem to a Tank Vault tank order, it arrives together — one package, ready to deploy.
      Treatment coverage depends on your contamination level and fuel volume. For preventive maintenance in standard applications, follow the dosage instructions on the bottle. If you're dealing with an active contamination issue — visible slime on filters or strong fuel odor — you may need a higher initial dose. Contact Tank Vault before ordering if you need guidance on dosing for your specific tank capacity and fuel type.
      Yes. Killem biocide is specifically relevant for biodiesel blends. Biodiesel and low sulfur diesel are more susceptible to microbial growth than traditional diesel, making biocide treatment a recommended preventive step. If your fleet runs biodiesel blends — even B5 or B20 — adding Killem to your fuel maintenance routine helps prevent the bacteria and fungi growth that these blends are prone to.
      Killem kills bacteria on contact. For active contamination, you should see improvement in filter performance within one to two tank cycles as the biocide works through the system and dead organisms are filtered out. For preventive use, Killem works continuously to suppress microbial growth with each treated fill-up. Results depend on your contamination severity — contact us if you need application-specific guidance.
      Both. If you're addressing an existing contamination problem, Killem treats the immediate issue. But because diesel fuel has no microbial standards and every fill-up from a retail station introduces unknown contamination risk, ongoing preventive treatment is the industrial-grade approach — especially for fleets running biodiesel blends or storing fuel long-term.
      SKU: 070CH33291 Categories: , Brand:

      The Tank Vault Promise

      Every product we carry is vetted for real-world performance and backed by straightforward support.

      Compliance Documentation Included EPA approval documentation provided with your order — no chasing the manufacturer afterward.
      Ships Free Free shipping on every order, straight to your job site or facility.
      30-Day Hassle-Free Returns If it doesn't meet your needs, contact us immediately for a no-runaround resolution.

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      About transfer flow Biocide

      transfer flow is a trusted manufacturer of premium biocide. TankVault is an authorized dealer offering the full transfer flow lineup with free delivery, price match guarantee, and expert support.

      View all transfer flow products →

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