A strong diesel fuel algae treatment kills or controls fuel microbes, works with the fuel and water phases in a tank, and matches the amount of fuel you need to treat. The six options here are liquid biocides from Hammonds Biobor JF, Power Service Bio Kleen, and FPPF Killem, in 16-ounce bottles or gallon jugs. Hammonds Biobor JF 16 oz leads for its stated 1:80 treatment level, broad fuel compatibility, and additional claims about sludge, clogged filters, and lubricity.
Power Service Bio Kleen is a clear alternative if dual-phase action is your priority. Before buying, compare the label’s dosing directions with the product details: the supplied Killem listing gives conflicting treatment amounts, so verify its container label before use.
Hammonds Biobor JF 16 oz is the leading choice because its listed 1:80 treatment level covers up to 1,280 gallons, and its stated uses include diesel, kerosene, biodiesel, and home heating oil. It also claims to help prevent bacterial and fungal growth, sludge formation, and clogged filters while adding lubricity to low-sulfur diesel. Choose Power Service Bio Kleen 16 oz instead if you specifically want a product whose supplied details explicitly describe dual-phase action in diesel fuel and water.
Our Top Picks
Best OverallIts 1:80 treatment level covers up to 1,280 gallons, with listed uses across diesel, kerosene, biodiesel, and home heating oil.
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Best Dual-Phase 16 ozThe supplied details explicitly say its biocide works in both diesel fuel and water and kills bacteria and fungus.
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Best Dual-Phase GallonPower Service Bio Kleen Gallon
The gallon format suits larger treatment needs, and its listed features specify dual-phase action and use with ULSD and biodiesel blends.
View on Amazon- Largest Biobor Format Biobor JF Gallon
Compare diesel biocide treatments and their listed uses
| # | Product | Weight | Buy |
|---|---|---|---|
| 1 | 1. Biobor JF 16 ozBest Overall | 1.25 lb | View on Amazon |
| 2 | 2. Power Service Bio Kleen 16 ozBest Dual-Phase 16 oz | 16 oz | View on Amazon |
| 3 | 3. Power Service Bio Kleen GallonBest Dual-Phase Gallon | — | View on Amazon |
| 4 |  4. Biobor JF GallonLargest Biobor Format | 8.83 lb | View on Amazon |
| 5 |  5. BIOBOR JF 16 ozBus and truck fuel treatment | 1.2 lb | View on Amazon |
| 6 |  6. FPPF Killem 16 ozSlime and corrosion control | 16 oz | View on Amazon |
Detailed Reviews: Best Diesel Fuel Algae Treatment
#1 · Best Overall
1. Biobor JF 16 oz
- Weight: 1.25 lb
Best for: Multi-fuel tank maintenance.
Why it ranks #1: Its 1:80 treatment level covers up to 1,280 gallons, with listed uses across diesel, kerosene, biodiesel, and home heating oil.
A 16-ounce bottle treats up to 1,280 gallons at the listed 1:80 treatment level, making this Biobor JF option suited to maintaining larger fuel supplies in a compact container. It treats diesel, kerosene, biodiesel, and home heating oil, while targeting microbial growth and sludge that can contribute to clogged filters.
The listed 1:80 treatment level and 1,280-gallon capacity help buyers plan coverage for a sizable tank supply from one 16-ounce bottle. Its stated use across diesel, kerosene, biodiesel, and home heating oil accommodates mixed fuel needs. The product also breaks up or prevents sludge and helps prevent clogged filters, connecting microbial treatment with fuel-system upkeep. The supplied facts list separate initial and maintenance rates, so users can distinguish a stronger initial application from ongoing treatment.
- Treats up to 1,280 gallons at the listed 1:80 level
- For diesel, kerosene, biodiesel, and home heating oil
- Helps prevent bacterial and fungal growth
- Helps prevent sludge buildup and clogged filters
- The 16-ounce bottle covers less fuel than the gallon-size Biobor JF option.
Skip it if you need one container for more than 1,280 gallons; Duda Energy’s gallon-size Biobor JF treats up to 10,240 gallons.
This fits owners maintaining diesel or other listed fuels who want microbial control alongside sludge and filter protection. Choose it when the 1,280-gallon coverage suits your supply; larger tanks may call for a larger container.
Full product details
| Brand | Duda Diesel |
|---|---|
| Item Weight | 1.25 pounds |
| Manufacturer | Hammonds |
| Part Number | biobor16oz |
| Package Dimensions | 8 x 4 x 2 inches |
Listed on Amazon as: 16 oz Hammonds Biobor JF MicroBiocide Diesel Fuel Sludge Slime Bacteria Tank Treatment Biocide
View on Amazon#2 · Best Dual-Phase 16 oz
2. Power Service Bio Kleen 16 oz
- Weight: 16 oz
Best for: Water-contaminated diesel tanks.
Why it ranks #2: The supplied details explicitly say its biocide works in both diesel fuel and water and kills bacteria and fungus.
Dual-phase action lets Power Service Bio Kleen work in both diesel fuel and water, addressing a key challenge when microbes grow in a tank’s water layer. Its 16-ounce liquid bottle targets bacteria and fungus, making it a focused choice for stored diesel where water-associated contamination is a concern.
Because this biocide is effective in both diesel fuel and water, it addresses microbes across the two phases rather than targeting fuel alone. That matters for stored fuel: the supplied description notes that long storage can give microbes an opportunity to grow, with mucous-like filter accumulations and increased filter requirements among the first indications. The 16-fluid-ounce liquid format is straightforward to handle, though the provided facts do not specify a treatment volume or dosage rate.
- Dual-phase effectiveness in diesel fuel and water
- Kills microbes including bacteria and fungus
- Targets microbial contamination in stored diesel
- Liquid 16-fluid-ounce format
- The supplied product details do not provide a treatment volume or dosage rate.
Skip it if you need a stated gallons-per-bottle treatment rate; BIOBOR JF 16 oz lists a 640-gallon treatment figure.
Choose this for diesel storage where water-associated microbial growth is the central concern and dual-phase action matters. It suits buyers focused on bacteria and fungus control, but the supplied details leave treatment-rate planning unspecified.
Full product details
| Brand | Power Service |
|---|---|
| Included Components | Power Service 09016-09 Bio Kleen Diesel Fuel Biocide – 16 oz. |
| Item Form | Liquid |
| Item Volume | 16 fluid ounces |
| Item Weight | 16 ounces |
| Manufacturer | Power Service |
| Material Feature | Eliminates Microbes |
| Material Features | Eliminates Microbes |
| Model Number | 09016-09 |
| Size | 1 Count (Pack of 1) |
| Warranty Description | As Labelled |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Listed on Amazon as: Power Service 09016-09 Bio Kleen Diesel Fuel Biocide – 16 oz.
View on Amazon#3 · Best Dual-Phase Gallon
3. Power Service Bio Kleen Gallon
Best for: ULSD and biodiesel maintenance.
Why it ranks #3: The gallon format suits larger treatment needs, and its listed features specify dual-phase action and use with ULSD and biodiesel blends.
Dual-phase action works in both diesel fuel and water, while the one-gallon Bio Kleen jug is sized for substantial treatment needs. Power Service lists use in ULSD, biodiesel, and biodiesel blends, and describes the formula as alcohol-free for buyers who specifically want that formulation.
The dual-phase formula kills bacteria and fungus associated with diesel fuel and water, addressing microbes in both fuel and free or dispersed water. Its listed quick-kill and long-term maintenance roles let buyers consider it for either contamination response or ongoing treatment. Compatibility includes ULSD, biodiesel, and biodiesel blends, while the stated safe use in all diesel engines supports broad diesel applications. The one-gallon jug suits larger treatment needs, although the supplied facts do not specify a gallons-per-container rate.
- Effective in both diesel fuel and water
- Alcohol-free formula
- Listed for ULSD, biodiesel, and biodiesel blends
- For quick-kill treatment and long-term maintenance
- The supplied details do not state a gallons-per-container treatment rate.
Skip it if you need a stated treatment volume per bottle; Duda Energy Biobor JF gallon lists coverage up to 10,240 gallons.
This suits diesel users treating ULSD or biodiesel who want dual-phase microbial control and a gallon container. Its listed quick-kill and maintenance roles offer flexibility, but buyers needing quantified coverage will need a product with a stated treatment rate.
Full product details
| Brand | Power Service |
|---|---|
| Compatible with Vehicle Type | Multiple Vehicle Types |
| Container Type | Jug |
| Included Components | Power Service 9128-04 Bio Kleen Biocide, 1 Gallon |
| Manufacturer | Power Service |
| Part Number | 9128 |
| Manufacturer Warranty Description | See manufacturer |
| Model Number | 9128 |
| Size | 1 Gallon |
Listed on Amazon as: Power Service 9128 9128-04 Bio Kleen Biocide, 1 Gallon
View on Amazon#4 · Largest Biobor Format
4. Biobor JF Gallon
- Weight: 8.83 lb
Best for: Large-volume fuel storage.
Why it ranks #4: The one-gallon Biobor JF listing states that it treats up to 10,240 gallons and is intended for several fuel types.
One gallon treats up to 10,240 gallons at the listed 1:80 level, making this Duda Energy Biobor JF package suited to large fuel supplies. It treats diesel, kerosene, biodiesel, and home heating oil, while targeting bacteria, fungi, sludge, and slime that can interfere with clean tank operation.
The gallon container’s stated capacity of up to 10,240 gallons can simplify stocking for large tanks or recurring treatment needs. Its 1:80 treatment level gives buyers a stated basis for planning coverage. The listed fuel range includes diesel, biodiesel, kerosene, and home heating oil, supporting use across those supplies. Biobor JF also helps prevent sludge formation and clogged filters, connecting tank treatment with downstream fuel-system maintenance; it adds lubricity to low-sulfur diesel as well.
- One gallon treats up to 10,240 gallons at 1:80
- For diesel, kerosene, biodiesel, and home heating oil
- Helps prevent bacterial and fungal growth
- Targets sludge and clogged-filter issues
- The 8.83-pound item weight makes this a substantial container to handle.
Skip it if you only need treatment for a small fuel supply; Duda Diesel Biobor JF comes in a 16-ounce bottle.
This is a fit for operators maintaining large diesel or other listed fuel supplies who value high stated coverage and sludge control. Its gallon container and 8.83-pound item weight are worth considering for handling and storage.
Full product details
| Brand | Duda Energy |
|---|---|
| Item Weight | 8.83 pounds |
| Item model number | bioborgal |
| Manufacturer | Hammonds |
| Part Number | bioborgal |
| Package Dimensions | 12 x 7.25 x 4 inches |
Listed on Amazon as: Duda Energy 1 GallonHammonds Biobor JF MicroBiocide Diesel Fuel Sludge Slime Bacteria Tank Treatment Biocide
View on Amazon#5
5. BIOBOR JF 16 oz
- Weight: 1.2 lb
Best for: Bus and truck fuel treatment.
Why it ranks #5: This 16-ounce Biobor JF is described as a biocide and lubricity additive, with shock-treatment use also noted for contaminated systems.
Dual-phase chemistry combines microbial control with lubricity support in this 16-ounce BIOBOR JF additive, giving bus and truck operators two fuel-care functions in one product. The listed compatibility names those vehicle types, while the product information also identifies diesel and heating oil as fuels it can treat.
BIOBOR JF is described as both a fuel biocide and lubricity additive, so its role extends beyond microbial control to fuel lubrication support. Its dual-phase chemistry is a named feature, while the supplied description identifies use against microbial contamination in diesel and heating oil. A 16-ounce style and included bottle make it a compact option for equipment maintenance. The listed vehicle compatibility is bus and truck, a useful boundary for buyers checking whether that stated fit matches their application.
- Dual-phase chemistry
- Combines biocide treatment with lubricity support
- Listed for bus and truck compatibility
- For diesel and heating oil microbial control
- Listed vehicle compatibility is limited to bus and truck.
Skip it if you need a product with broader listed vehicle compatibility; Power Service Bio Kleen 9128 lists multiple vehicle types.
This suits bus and truck operators seeking diesel microbial treatment with lubricity support, including maintenance involving heating oil. Keep its stated vehicle compatibility in mind if you are selecting a treatment for equipment outside those listed types.
Full product details
| Brand | BIOBOR |
|---|---|
| Compatible with Vehicle Type | Bus, Truck |
| Included Components | (1) Biobor JF Diesel Biocide and Lubricity Additive, 16-Ounce |
| Item Weight | 1.2 pounds |
| Manufacturer | Hammonds Fuel Additives, Inc. |
| Part Number | BB16EZ01US |
| Model Number | BB16EZ01US |
| Outer Material | Metal |
| Style Name | 16 oz |
Listed on Amazon as: BIOBOR JF Diesel Fuel Additive: Highly Effective Fuel Biocide Supplement, Prevents Corrosion of Fuel Tanks, Increases Lubricity, Dual Phase Chemistry | 16 Ounce, (BB16EZ01US)
View on Amazon#6
6. FPPF Killem 16 oz
- Weight: 16 oz
Best for: Slime and corrosion control.
Why it ranks #6: Killem is listed as a fuel-oil biocide for bacteria, fungi, slime, and corrosion, but its supplied treatment amounts conflict.
FPPF Killem targets bacteria and fungi while reducing slime and corrosion, pairing microbial control with two fuel-system concerns named in its product details. The 16-ounce bottle is identified as an EPA-registered fuel-oil biocide, and the title specifies diesel fuel treatment for buyers focused on tank contamination.
The listed control of bacteria and fungi addresses microbial growth, while reducing slime speaks to deposits that can accompany contamination. The product also states that it reduces corrosion, giving buyers another tank-care function in the same treatment. Its 16-ounce bottle is the supplied container size, but the listed facts conflict on gallons treated: the title says 1,920, while a key feature says 1,280. Check the product labeling before calculating treatment coverage.
- Controls bacteria and fungi growth
- Reduces slime
- Reduces corrosion
- 16-ounce bottle identified as an EPA-registered fuel-oil biocide
- The title and key feature give conflicting treatment volumes: 1,920 versus 1,280 gallons.
Skip it if you require an unambiguous stated treatment volume before dosing; Duda Diesel Biobor JF 16 oz lists up to 1,280 gallons.
This may suit diesel or fuel-oil users prioritizing microbial, slime, and corrosion control in a 16-ounce bottle. Because the supplied treatment-volume figures conflict, it is a poor fit when precise coverage planning is essential.
Full product details
| Brand | FPPF |
|---|---|
| Included Components | Fuel Treatment Bottle |
| Item Weight | 16 ounces |
| Manufacturer | FPPF Chemical Company |
| Model Number | FPPF-90119-1 |
| Warranty Description | No Manufacturer Warranty |
Listed on Amazon as: 00119 KILLEM BIOCIDE 16 OZ. BOTTLE, TREATS 1920 GALLONS OF DIESEL FUEL PER BOTTLE
View on AmazonWhat microbial contamination can look like
Microbial contamination may first show up as mucous-like buildup on fuel filters, rather than as a clear visual sign in the tank. The Bio Kleen descriptions specifically identify slime-like filter accumulations and increased filter requirements as possible indications. A biocide may address microbes, but these listings do not establish that it will clear every existing obstruction or repair corrosion, so do not treat a dose as a substitute for inspecting a tank or filter.
Biobor JF and Bio Kleen both describe control of bacteria and fungi; Biobor also lists sludge and clogged-filter prevention, while Bio Kleen describes its dual-phase action in fuel and water. Those claims do not confirm how severe a particular contamination problem is.
If filters are plugging or engine operation is affected, use the product label and equipment guidance to determine whether fuel-system inspection or service is also needed.
Check treatment amounts against the label
The listed treatment figures are not fully consistent, so verify the container label before calculating a dose. Biobor JF 16 oz is described as treating up to 1,280 gallons at a 1:80 level, and its additional facts distinguish an initial dose of 1 ounce per 40 gallons from maintenance at 1 ounce per 80 gallons. The Biobor JF gallon listing says up to 10,240 gallons.
Killem is the clearest sizing trap: its title says 1,920 gallons per bottle, while its key features say 1,280 gallons. These differences may reflect distinct directions or listing details, but the supplied information does not resolve them.
Do not assume that bottle size alone tells you the dose, or transfer one product’s rate to another. Use the instructions for the exact formulation and treatment purpose, especially when treating contaminated fuel rather than maintaining clean fuel.
How to Choose a Diesel Biocide
Treatment amount and dose clarity
Look for a stated treatment amount that matches your tank volume and the treatment purpose. Biobor JF 16 oz lists up to 1,280 gallons at 1:80, while its additional facts specify an initial rate of 1 ounce per 40 gallons and maintenance at 1 ounce per 80 gallons. Biobor JF Gallon lists up to 10,240 gallons.
The Killem listing conflicts: its title says 1,920 gallons, but its features say 1,280 gallons. A smaller tank or occasional treatment may suit a 16-ounce bottle; larger fuel stores may favour a gallon format.
Confirm the exact label directions before dosing, since initial, maintenance, and shock treatments can have different rates.
Fuel and water compatibility
Check that the treatment is described for the fuel and phases present in your system. Bio Kleen 16 oz explicitly says it is effective in both diesel fuel and water; the gallon listing also identifies ULSD, biodiesel, and biodiesel blends. Biobor JF 16 oz lists diesel, kerosene, biodiesel, and home heating oil, and its other listing describes dual-phase chemistry.
These details matter when fuel storage or biodiesel may involve water, but they do not mean every product has identical directions or approvals. Buyers treating a tank with water-associated contamination may prefer a product with explicit dual-phase wording, such as either Bio Kleen format.
For other listed fuel types, favour a formulation whose product details name that fuel and verify the container label.
Format and secondary claims
Choose the container size and secondary features that fit your use rather than assuming all biocides do the same extra work. The products range from 16-ounce bottles to one-gallon jugs. Biobor JF listings also claim sludge and clogged-filter prevention, and the 16-ounce listing says it adds lubricity to low-sulfur diesel.
Bio Kleen emphasizes killing microbes and, in the gallon listing, says it contains no alcohol; FPPF Killem lists bacteria, fungi, slime, and corrosion control. A user treating a smaller volume may find a 16-ounce format easier to match to the job, while operators treating larger stored volumes may favour a gallon container.
Select based on the exact label and treatment task, not on secondary claims alone.
Which Diesel Biocide Should You Choose?
For a broad-use 16-ounce treatment with a stated 1:80 rate, choose Biobor JF 16 oz; its listing covers up to 1,280 gallons and names several fuel types. If explicit action in both diesel and water matters most, choose Power Service Bio Kleen 16 oz. For larger treatment volumes, Power Service Bio Kleen Gallon specifies dual-phase action and ULSD and biodiesel use, while Biobor JF Gallon lists treatment for up to 10,240 gallons.
BIOBOR JF 16 oz is another option when the listed shock-treatment capability and lubricity-additive description are useful. FPPF Killem 16 oz is a bacteria-control option, but its listed treatment amounts disagree, so check the bottle label before calculating a dose.
Related Buying Guides
Frequently Asked Questions
How can I tell whether microbial growth is present in a diesel tank?
Possible clues include visible slime or sludge in the tank, recurring clogged filters, or fuel problems associated with contamination. These signs are not a definitive diagnosis, so inspect the tank and fuel carefully and consult a qualified service professional if you are unsure. The listed treatments describe uses related to bacteria, fungi, sludge, or filters.
Should I use a shock treatment or a maintenance dose for contaminated fuel?
For fuel you believe is contaminated, follow the product label’s directions for the appropriate treatment rather than substituting a maintenance dose. The supplied product details identify some products as having shock-treatment capability, but they do not provide a universal dosing rule. Confirm the product, fuel type, and treatment amount on its label before use.
What precautions should I take when handling and disposing of diesel biocide?
Read and follow the product label and safety information before handling any biocide, and avoid contact with skin or eyes. Do not pour leftover product or treated fuel into drains or onto the ground. Use the disposal instructions provided with the product and follow applicable local requirements; seek professional guidance if instructions are unclear.
How do I choose between products that describe dual-phase action?
Choose a product whose supplied details explicitly state dual-phase action if treatment in both diesel fuel and water is a priority. The listed details specifically describe that feature for Power Service Bio Kleen 16 oz and its gallon version. Other listed claims, such as fuel compatibility or treatment volume, may also help distinguish options.
How should I calculate the treatment amount for my tank?
Use the treatment rate on the exact product label and calculate from the volume of fuel being treated. Do not assume that different products or sizes share a dose. The supplied details list rates or treatment volumes for several options, but FPPF Killem’s listed amounts disagree, so verify its bottle label before dosing.
Final Words
For a broad-use 16-ounce option, Hammonds Biobor JF stands out: its listed 1:80 rate covers up to 1,280 gallons, and its stated uses include diesel, kerosene, biodiesel, and home heating oil. Choose Power Service Bio Kleen if explicit dual-phase action matters most. For larger volumes, compare the gallon listings; check the bottle label for FPPF Killem because its supplied treatment amounts conflict.
