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Ferox Sample Pack

$20.97
$20.97

Experience Ferox in your own vehicle before committing to a full pack.

The Sample Pack includes four 20-gallon treatments—enough to run the Two-Tank Test and compare your mileage, starts, idle, throttle response, and overall engine feel.

  • 4 tabs per pack

  • 1 tab treats up to 20 gallons

  • Scored tabs for breaking into 1/2 or 1/4 treatments

  • Covered by the Two-Tank Money-Back Guarantee

Your vehicle. Your results.

USE CODE "DASH4" for a free sample, just pay shipping.

(Free sample packs are not available for international orders)
$20.97
$20.97

What Ferox Customers Are Saying

Unbelievable Results, Will Purchase Again & Again

I have taken these tablets and halved them, drop on into my tank then fill up. Not only have I gained a few mpg’s, my bike runs smoother with more pep! I ride a 23’ Royal Enfield Interceptor, I was looking for an additive to assist in keeping the fuel system clean and possible assist in mpg, I found it!

Next winter I will run my imaging scope through and inspect inside the fuel system, as of this moment though, I am thoroughly satisfied and impressed!

I am not one that believes in a lot of additives, a machine should be designed and built to function without, though due to all of the emission requirements and regulations, most of our vehicles are choked and restricted (My back ground, retired certified master tech). I firmly believe this additive is a way to get the most efficiency out of ones vehicle.

Lay Monk Jeffery

Originally posted on Amazon

Organo-metallic chemistry at the pinnacle of fuel additive technology.

So after finding this product on Amazon, ordering it and subsequently using it for about a month I can confidently say that its advertised claims are accurate and as a user, you should anticipate experiencing these benefits as well. Here are the highlights of my personal experience using these tablets in my vehicles that are repeatable on my daily driver Forester:


- noticeably smoother idle and quicker starts

- quicker throttle response from off idle at a stoplight/sign up through the low to mid power bands.

- improved fuel mileage, even with seasonal "winter" fuel.

- much less carbon on the tailpipe (note: I wasnt anticipating this due to modifications made to my engine, but it is definitely reduced)

- horsepower improvement appears likely


Now, other benefits would be the convenience factor and for those of us that use fuel additives prior to filling up, this is a major bonus. Simply dropping in a tab or two versus adding a liquid based product that usually needs wiping up afterwards, plus the small packet size is a win/win. I've been in communication with customer representative back and forth and this company is very customer oriented, and they look forward to hearing about your experiences or if you have questions for them. Barring any prior mechanical issues with your engine, you are guaranteed to have a positive outcome by using these tablets in your vehicles' fuel. I will be using these for the life of my vehicles.

Rob

Originally posted on Amazon

Fillup and then wait 30

It does seem to work to me, but I have found that it only really seems to work about 30 minutes after I put it in a full-up. If you expect instant results, you will be disappointed. I found it works best if you pop a tab in, fill up, and then park your car for a while. I do like how quick it is to use, jut drop it in and go.

R. Badlore

Originally posted on Amazon

Amazing in Diesel!

I have been using these for years, and glad they finally are available on Amazon. Use it in my 2016 Titan 5.0 Cummins, 2023 Silverado (3.0 liter Duramax), 2025 Audi SQ8. In my Titan, I get 1.5 mpg more than without. It is like getting 2 free gallons of diesel per tank. With diesel at $3.50/gallon, they are effectively free to use!

Paul Ellingson

Originally posted on Amazon

Keep your gas clean

Love these things, have a bag in each car to help maintain clean fuel lines and performance. It's a sutle performance change more so depending how little you treat before. Very easy to use, I pop it into the gas nozzle and start fueling. Better then 10 dollar bottles of Lucas.

Wayne Andrew Donovan

Originally posted on Amazon

Worth using

I drive 08 MDX and make 360 miles every weekend back and forth. Driving 65 mph or less to get 22-24 mpg, the car is empty only me. When I get back, left a range of 60 mile in the tank. I heard about the Ferrox tab and used it. Went same trip doing 68-69 mph and when I was coming back, I had the car loaded of my stuff which was in the semi truck ( which is alot)when I hit home, 130 mile of range was left in the tank, plus the car felt much quieter and smoother. I use premium gas, bu second fill up said let me use regular gas to compare, I can say it would not give you the same results by downgrading the fuel type. Overall I will keep using it. Good product and I recommend using it.

Raghad Taqi

Originally posted on Amazon
THE SCIENCE INSIDE THE TAB

COMBUSTION HAPPENS IN MILLISECONDS. FEROX HELPS MAKE THEM COUNT.

Inside your engine, fuel, oxygen, heat, pressure, and timing must come together during an extremely short combustion window. When that process is incomplete or inconsistent, some fuel potential is lost and more soot, carbon-rich compounds, and other combustion byproducts can remain.

Ferox is a solid fuel catalyst designed to support the oxidation reactions occurring during that brief combustion event.

FUEL + OXYGEN + FEROX CATALYST → MORE CONSISTENT COMBUSTION → MORE USEFUL WORK + FEWER COMBUSTION BYPRODUCTS
Ferox does not create additional energy. It is designed to help the engine make better use of the chemical energy already stored in the fuel.

COMPLETE COMBUSTION IS THE TARGET.

WITHOUT COMBUSTION SUPPORT
  • Less consistent oxidation
  • More unburned hydrocarbons
  • More soot and carbon-rich byproducts
  • Greater variation between combustion events
  • More fuel potential lost outside useful work
WITH FEROX CATALYST TECHNOLOGY
  • More consistent oxidation
  • More complete fuel participation
  • Fewer incomplete-combustion byproducts
  • More consistent combustion events
  • Better use of the fuel's available energy
THE ENGINE DOESN'T NEED MORE FUEL. IT NEEDS TO USE ITS FUEL BETTER.
Ferox works at the point where fuel becomes power. That is what separates it from treatments focused primarily on storage, injector cleaning, or deposits after they form.
Smoother throttle response
More consistent idle
Less soot and carbon buildup
Better use of every tank
WHY FEROX?

ENGINEERED OVER DECADES. PROVEN IN THE REAL WORLD.

Ferox isn't a new fuel-treatment idea built around a marketing claim. Its catalyst technology reflects four decades of work across everyday vehicles, commercial fleets, industrial equipment, and demanding fuel applications.
40 YEARS

OF COMBUSTION EXPERIENCE

Four decades spent developing and applying fuel-catalyst technology across changing fuels, engines, and operating environments.

BILLIONS OF GALLONS

TREATED WITH FEROX TECHNOLOGY

Ferox catalyst technology has been used across billions of gallons of fuel in consumer, commercial, and industrial applications.

MILLIONS OF DATA POINTS

FROM REAL-WORLD USE

Performance has been evaluated through millions of operational data points—not only controlled demonstrations or isolated testimonials.

TRUSTED WHERE PERFORMANCE MATTERS.

EVERYDAY VEHICLES

Used by drivers looking for smoother performance, cleaner combustion, and a simple treatment at fill-up.

COMMERCIAL FLEETS

Evaluated in high-mileage operations where fuel consumption, idle time, DEF usage, and operating costs can be measured.

HEAVY EQUIPMENT

Used in demanding mining, construction, agricultural, and industrial environments where reliability and uptime matter.

PERFORMANCE APPLICATIONS

Used in racing and high-load environments where consistency, response, and confidence in every tank are essential.

ONE TAB IS SIMPLE. THE TECHNOLOGY BEHIND IT ISN'T.

Ferox combines decades of fuel-catalyst experience with an easy drop-in format. No measuring. No messy liquids. No complicated installation. Just the correct tab for the amount of fuel being treated.

TWO TANKS. YOUR VEHICLE. YOUR RESULTS.

Use Ferox for two complete tanks. If you don't notice a difference in how your engine runs, your purchase is covered by the Ferox Two-Tank Money-Back Guarantee.