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Biobor JF

Fuel Biocide and Lubricity Additive
  • Kills fungi and bacteria in all fuel types
  • Helps prevent filter plugging and corrosion
  • Disperses and prevents sludge
  • Adds lubricity for added protection
  • Kills in both water and fuel phase
  • Recommended by equipment manufacturers
  • Reduces injector and engine wear
  • Approved for military use (MIL-S53021A)

Biobor JF has been the most widely used and recommended fuel biocide and lubricity additive. Recommended by numerous major engine manufacturers, Biobor JF eliminates and prevents microbial growth in fuel and dramatically increases the life of engine filters. Additionally, Biobor JF adds lubricity back to ULSD, protecting injectors and fuel pumps while also preventing corrosion. For the life of your engine and the quality of your fuel, trust Biobor JF, the worldwide standard since 1965. BUY ONLINE NOW

Available in: 8 oz. (12 per case), 16 oz. (12 per case), 32 oz. (6 per case), 1 Gallon (4 per case), 4.6 Gallon, 51.4 Gallon Drum, 330 Gallon Tote


Remove any water or contamination present in the fuel prior to applying additive. For existing contamination, long term storage or initial treatment, a shock dosage should be used for effective sterilization. Subsequent fuel may be treated with a maintenance dosage to prevent future growth and ensure fuel quality. There are three methods of applying an additive. 

  1. Metered Injection - Hammonds Technical Services offers fluid powered injector systems designed to automatically inject and blend the additive thoroughly as fuel passes through the system. Metered injection is the most accurate and effective method for applying an additive. Interested in learning more, use our contact form and let us know.
  2. Splash Blending with Circulation - Adding the additive during filtration is an effective way to blend the additive quickly and effectively. If you plan to clean your fuel and tank, splash blend the additive in at the end of the filtration process to allow the additive time to mix.
  3. Splash blending during Fueling - The most common way to blend the additive is during a fueling event. Simply add the additive prior to fueling and the agitation provided during the fueling event will provide enough blending action to properly mix the additive.

Shock Treatment

Maintenance Treatment



Make sure your engine runs at peak performance by using one of Biobor’s fuel additives designed for every season and every situation.

  • Raises cetane for quick starts
  • Cleans and lubricates injectors and fuel pumps
  • Extends filter life
  • Controls water/prevents corrosion
  • Prevents fuel degradation and gumming
  • Improves performance
  • Restores power and efficiency
  • Extends storage

  • Prevents fuel gelling and icing in winter
  • Raises cetane for quick starts
  • Cleans and lubricates injectors and fuel pumps
  • Prevents filter plugging
  • Improves performance
  • Extends storage

  • Inhibits wax crystal growth
  • Reduces pour point
  • Reduces cold filter plugging by up to 30°F
  • Jet fuel de-icer prevents ice blockages and filter icing
  • Adds lubricity to protect injectors and fuel pump
  • Minimizes the need for kerosene dilution

  • Increases cetane levels
  • Cleans injectors
  • Stabilizes diesel for storage
  • Increases lubricity
  • Reduces soot and smoke
  • Inhibits corrosion and controls water
  • Anti-gel and flow improvers for winter operation

  • Detects harmful fungus and bacteria in fuel
  • Ensures fuel supply quality
  • Low cost
  • Easy to use
  • Early warning detection of microbial infestation in fuel
  • Detects microbes in all hydrocarbon fuels and oils

All the Fuel, All the Time®

Biobor is the premiere fuel additive for jet fuel, diesel and gasoline

Customer Reviews

Biobor JF

Customer Reviews

Gary Eckert

My diesels love this stuff. Over 15 years of marine use and the engines have never had fuel issues.

William Hildreth

Good product for killing bacteria and fungus in heating oil and kerosene tanks. Works fast and easy.


I have a fair amount of experience with marine diesels and this additive is absolutely essential in my opinion for your diesel fuel. In fact, I consider it essential in all diesel fuel regardless of what the engine is powering on land or water. It kills the microorganisms that turn into a slimy, snotty, blob usually associated with water or condensation build up that could be growing in your fuel tank that your unaware of until it's too late. With plugged up fuel filters, injection pump, or worse, it could be a very expensive repair or a least a major inconvenience at the worst possible time. Biobor takes care of that. The nice thing is it doesn't take much, a little goes a long way. I have used it at every fuel up for over 28 years and have never had a fuel related problem with any of my diesel engines on land or water. Just service your fuel filters regularly and you're good to go. Pretty cheap insurance if you ask me.


This is a great product to keep the slime/microbial growth out of the fuel. I have not had a clogged filter since using this fuel treatment.


With biofuel being mixed with diesel, you have to eliminate microbe growth. This is the best product for this application. I believe this was originally used in the aircraft industry because when you are in the air you don't need fuel problems.


Had mold in the diesel fuel tank, and this did the job it was supposed to, would use it again.


Eliminated fuel tank in truck issue. Works as expected, helped improve drivability and starting. Had purchased Stabil diesel fuel treatment brand and it was crystallized in container. Contacted Stabil manufacturer and they said in cold weather it will crystalize. I replied and told them it was in my house at 78 degrees since I got it from amazon 2 days prior- they never replied back to me. Would buy biobor again (will not buy the stabil equivalent).


I've been using this for years and have never experienced any biologic growth in my boat fuel tank, that I had trouble with previously. When I replaced my old tank after 30 years, the interior was clean.


Works better than Killem biocide in my vehicle.

Peggy Saller

Used this product for lots of years. Never had a problem.