Diesel Treat

Diesel Treat 100% guaranteed

Diesel Treat

Diesel Conditioner & Anti-Gel

Howes Diesel Treat is North America’s leading diesel fuel conditioner and anti-gel. Loaded with performance-enhancing technology, Diesel Treat is the absolute best solution to preventing gelling in even the harshest temperatures. More than just an anti-gel, Diesel Treat is also designed to solve the inherent problems created by today's ULSD. It prevents deposits, adds lubricity, and safely removes water from fuel. Warranty safe and effective in all diesel and biodiesel blends, Diesel Treat is the number one treatment for all diesel vehicles and equipment.

Available sizes:

15 oz 32 oz 64 oz

WARNING: Cancer - www.P65Warnings.ca.gov



Prevents Fuel From Gelling

Howes Diesel Treat is the nation’s most trusted anti-gel. Tested and proven to prevent gelling in even the coldest weather, diesel owners choose the Howes family’s time tested and proven formula to keep them going.


Adds Lubricity

Howes Diesel Treat provides increased lubricity to injectors, pumps and upper cylinders, adding to engine performance and life with today’s Ultra Low Sulfur Diesel (ULSD) fuels.


Removes Water

Many products emulsify or disperse water and frequently use alcohols or solvents that can do damage to your engine. Howes Diesel Treat is a premium petroleum based product that demulsifies water, safely removing it from diesel fuel. It contains no alcohol or other harmful solvents, making it warranty safe for all diesel emission systems.

Other Features Include
  • Prevents diesel fuel from gelling
  • Safely removes water from diesel fuel
  • Contains no alcohol or harmful solvents
  • Increases power and fuel economy
  • Cleans and lubricates fuel injectors
  • Eliminates smoking and rough idle
  • Safe and effective in all diesel and biodiesel fuels
  • Particulate filter friendly and warranty safe


Truck Trucks

Tractor Tractors

Construction Construction


Treatment Ratios

Part # Size *Above 0° F *Below 0° F
103064 15 oz. 1 oz. to 5 gal. 1 oz. to 2.5 gal.
103062 1 quart 1 oz. to 5 gal. 1 oz. to 2.5 gal.
103060 1/2 gal. 1/2 gal. to 320 gal. 1/2 gal. to 160 gal.
103068 55 gal. drum 1 gal. to 640 gal. 1 gal. to 320 gal.
103089 275 gal. tote 1 gal. to 640 gal. 1 gal. to 320 gal.

* Cars/Pickups/Tractors double dose both treatment ratios


  • What Is Diesel Gelling?

    Diesel gelling is what happens when cold weather or freezing temperatures cause diesel fuel to form wax crystals and begin to turn from a liquid into a gel-like substance, preventing it from pouring. The lowest temperature at which diesel fuel can be poured is called the pour point. After reaching its pour point, diesel fuel will be too gelled to flow through your system. Though gelling temperatures vary based on the quality of the fuel and other factors, it’s good to assume that if the weather reaches the point of freezing (around 32 degrees Fahrenheit), your untreated diesel is on its way to gelling.
    Gelled diesel will not flow properly though your engine, so you need to fix this problem as fast as possible if you start to see cloudiness in your diesel fuel or pouring becomes difficult. But the best way to deal with gelling is to prevent it in the first place. Anti-gel products, such as Diesel Treat, can be added to your diesel in order to keep it in its liquid form even in freezing temperatures.

  • How does Diesel Treat safely remove harmful water from diesel fuel?

    Diesel Treat safely removes water from your system by demulsifying it or pushing water molecules out of the fuel to be removed by your water separator, allowing only pure fuel to burn. Water can be very abrasive to your system, cause corrosion, and erode injector nozzles. It can also lead to icing, which causes problems similar to gelling. Other products emulsify water or mix water molecules into the fuel, allowing it to flow through your system where it can cause damage. Demulsification is the preferred method to remove water molecules from diesel fuel according to major diesel engine manufacturers. Diesel Treat is 100% petroleum-based and made with no alcohol or harmful solvents. Products that use alcohol may be very corrosive to your system. Alcohol can cause the swelling and breakdown of gasket and seal materials. Alcohol is also good “food” for bacteria and other microorganisms so it can contribute to the development of algae and microbial growth. Diesel Treat is always safe to use and will not void manufacturers’ warranties. 

  • Is Using a Fuel Additive Safe Long-Term?

    Yes! In fact, it’s recommended that you use a diesel fuel additive to extend the life of your diesel engine. Whether you drive a large truck, work with an excavator at a construction site, or navigate an RV across the country on your vacation days, you can certainly benefit from adding an additive all year round. Fuel additives that clean and lubricate diesel fuel will prevent premature wear of your injectors, pumps, and upper cylinders. In colder climates, or in situations where you might travel from warm weather into colder temperatures, an additive like Diesel Treat that includes an anti-gel is important. A system that does not use quality additives may suffer over the years, not lasting nearly as long as an engine that was properly cared for. Not using an anti-gel in the winter could cause serious down time and cost you money. Howes products can be used simultaneously and overtreatment is not harmful. Even if you’re using an injector cleaner like Howes Diesel Defender, if cold weather starts to sneak in, you can add Diesel Treat right away without any issues.


Diesel engines can be a bit hard to understand for those who have only used gasoline engines for the majority of their lives or careers. But there are major benefits to diesel engines, especially when you care for them correctly. Using an additive to prevent diesel fuel from gelling, as well as for lubrication and cleaning, will extend the life of your engine. Using these types of products can be the key to a long, successful agricultural or trucking career. They can help you to protect and power your diesel trucks, cars, boats, or large equipment year after year.

Why wait to learn more? Get in touch with Howes Products today if you have more questions about diesel engines and discover how Diesel Treat may be the perfect solution to your gelling problem.




Howes Diesel Treat and Ultra Low Sulfur Diesel

Testimonial Truck Noshadow

“My Truck Has Never Frozen Up…”

I use your product year round. It works great! I began using it in the winter of 1991 and am pleased with the result. My truck has never frozen up. Last year, a truly brutal winter, I passed many trucks that had fuel problems, feeling very fortunate to be moving. Since I am still relatively new to trucking, it was satisfying to know that I chose a winner in Howes Anti-Gel.

- Ben B. Chesapeake, VA

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