Diesel Treat

Diesel Treat 100% guaranteed

Diesel Treat

Diesel Anti-Gel & Fuel Conditioner

Howes Diesel Treat is North America’s number one trusted anti-gel and fuel conditioner. Diesel Treat safely removes water and prevents gelling in even the coldest climates. Unlike some others, this superior anti-gel works effectively using no alcohol or harmful solvents. Made with advanced performance-enhancing technology, it safely and consistently provides unbeatable protection. Diesel Treat is designed to solve the problems created by today’s ULSD fuel. In addition to being an anti-gelling agent for diesel fuel, it is also a diesel conditioner that provides lubricity, prevents deposits, and eliminates smoking and rough idle. Warranty safe, it is effective in all diesel and biodiesel fuels, including home heating oil. From truckers to farmers, pick-ups to diesel automobiles, Howes Diesel Treat is the most trusted additive on the market. Best of all, Diesel Treat is guaranteed to work. At Howes we guarantee, “YOU GO or WE PAY the TOW!”

Available sizes:

15 oz 32 oz 64 oz

WARNING: Cancer - www.P65Warnings.ca.gov



Prevents Fuel From Gelling

Treating diesel fuel for winter is a must and Howes Diesel Treat is the nation’s most trusted anti-gel for diesel fuel. Its special formula has been tested and proven time and again to prevent gelling in even the coldest weather. Owners of all types of diesel vehicles and equipment who know how to find the best, have used Howes for generations. You can rely on the Howes family’s guaranteed product to keep your engines going all winter long.


Adds Lubricity

Diesel treat helps protect against today’s Ultra Low Sulfur Diesel (ULSD) fuels. It provides added lubricity to injectors, pumps, and upper cylinders. In doing so, it extends the life and increases the performance of diesel engines of all types.


Prevents Deposits

This antigel diesel fuel additive does more than simply prevent fuel from gelling in cold weather. Diesel Treat also contains a specialized detergent package to help prevent fuel injector deposits. Carbon deposits on diesel injector systems can cause loss of engine power and other issues. Preventing these helps to improve performance and fuel economy, saving you money.


Removes Water

Water is abrasive to your system and can lead to fuel filter icing. Many products emulsify or mix water into the fuel. This process often uses harmful alcohols or solvents that can do additional damage to your engine. Petroleum-based Diesel Treat demulsifies water, safely pushing it out of the fuel using no alcohol or harmful solvents.

Other Features Include

  • Prevents diesel fuel from gelling
  • Increases lubricity in injectors, pumps, and upper cylinders
  • Prevents injector deposits
  • Safely removes water
  • Eliminates smoking and rough idle
  • Reduces cold filter plugging
  • Increases power and fuel economy
  • Safe and effective in all diesel and biodiesel blends
  • Particulate filter friendly and warranty safe for all diesel emission systems
  • Contains no alcohol or harmful solvents
  • Why Use Howes Diesel Treat?

    Like any moving part, your engine requires preventive maintenance to run at peak efficiency.

    Diesel engines are found in countless modern machines. This includes pick-up trucks, 18-wheelers, boats, tractors, and more. These engines are powerful and often last longer than those of gasoline engines.

    There are many benefits to a diesel engine on the road and on the farm, but diesel can have its downsides.

    Today’s Ultra Low Sulfur Diesel (ULSD) fuel is severely lacking in lubricity. The tight clearances and extreme heat of newer High Pressure Common Rail (HPCR) systems make them prone to diesel injector deposits. Clean injectors are key to your machine’s productivity. Dirty injectors can lead to uneven spray patterns, unburnt fuel, and decreased fuel economy.

    Furthermore, diesel fuel, especially biodiesel, has a high likelihood of gelling when exposed to freezing temperatures.

    Gelling is the result of diesel fuel thickening up in freezing temperatures. Gel can commonly block filters, lines, and fuel rails.  At around 34°F, you can start to see the process of gelling; fuel in the tank starts to thicken, form deposits, and get cloudy.

    At around 15°F or lower, untreated diesel fuel may fully gel, resulting in smoke, the loss of power, hard starts, or the inability to start at all. Fuel flow is the main culprit in this situation, but declining long-term engine performance is another threat.

    When temperatures drop, your engine is at risk. And when a diesel engine doesn’t run, unwanted downtime and potential lost revenue are likely to follow.

    Luckily, Howes Diesel Treat is your unbeatable solution. Diesel treat provides you with all the added benefits your diesel needs as an anti-gel and fuel conditioner. While preventing gelling in even the coldest temperatures, this truly is a diesel treatment suitable for all conditions.

    Diesel Treat is always safe to use thanks to its petroleum-based ingredients. This alcohol and harmful solvent-free conditioner will not void any manufacturers’ warranties.

    Best of all, Diesel Treat is 100% guaranteed. Howes is the only company to offer a free tow guarantee. “YOU GO or WE PAY the TOW!”


HD Semi Truck HD Trucks

Tractor Combine Tractors

Construction Excavator Construction

Recreational Vehicle RV

Light Duty (5) Pick Up Trucks


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


Diesel engines can be a bit hard to understand for those who have only ever used gasoline engines. But there are major benefits to diesel engines, especially when you care for them correctly.

Using an additive, such as diesel treatment, to prevent diesel fuel from gelling is crucial. This, alongside ensuring good lubrication and cleaning, will extend the life of your engine. Using these types of products can be the key to a long, successful trucking or agricultural career. They can help you to protect and power your diesel trucks, cars, boats, or large equipment year after year.

When using a product like Diesel Treat, it’s important to understand exactly what it does. It’s also important to understand the types of problems the anti-gel diesel fuel additive is intended to fix. Read the following FAQs to understand more about fuel additives, gelling, and how to protect your fuel system.

  • What is diesel gelling?

    Diesel gelling is what happens when cold weather or freezing temperatures and diesel fuel mix. Dropping temperatures can cause diesel fuel to form wax crystals and begin to turn it from a liquid into a gel-like substance. This prevents it from flowing properly.

    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. Gelling temperatures may vary based on the quality of the fuel and other factors. But when air temperatures reach 32 degrees Fahrenheit, your untreated diesel fuel is always at risk to gel.

    Gelled diesel will not flow properly through your engine. If you think your fuel is at risk, you need to fix this problem as fast as possible. If you start to see cloudiness in your diesel fuel or pouring becomes difficult, the gelling process has already begun. 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 to help maintain its liquid form even in freezing temperatures.

  • Does Diesel Treat reliquefy fuel after it has gelled?

    No. Diesel Treat will not reverse diesel gelling. Once the fuel reaches its cloud point, the point at which wax crystals begin to form, no anti-gel can reverse that. Instead, you would turn to an emergency rescue product such as our Howes Diesel Lifeline. Without the use of alcohol or harmful solvents, our Diesel Lifeline will modify the melting points of wax and ice to quickly and safely restore fuel flow in your system.

  • 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. Once separated, the molecules can be removed by your water separator. This process allows only pure fuel to burn.

    Water is bad for diesel fuel and fuel systems. 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. This allows water to flow through your system where it can cause damage. According to major diesel engine manufacturers, demulsification is the preferred method to remove water molecules from diesel fuel.

    While some products use alcohol to deal with water in fuel, 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. 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 long-term use of a fuel additive safe?

    Yes! In fact, it’s recommended that you use a diesel fuel additive or diesel fuel conditioner for the winter and other seasons as well. Quality additives will 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 and diesel conditioners that clean and lubricate diesel fuel will prevent premature wear of your injectors, pumps, and upper cylinders. In areas with consistently cold temperatures, an additive like Diesel Treat that includes an anti-gelling agent for diesel fuel is essential. It is just as important in situations where you travel between warm weather and cold climates.

    A system that does not use quality additives may suffer over the years. Without proper care, your engine will not last nearly as long as an engine that was well maintained. Not using an anti-gel in the winter could cause serious downtime and cost you money. Treating diesel fuel for the winter is just one vital step to keeping your engine healthy.

    Howes products can be used simultaneously. Additionally, when using strictly Howes fuel additives, overtreatment is not harmful. Even if you’re already using an injector cleaner like Howes Diesel Defender, you’ll need a full defense for your engine when temperatures start to change. If cold weather starts to sneak in, you can add Diesel Treat right away without any negative issues.


Find Howes Diesel Treat anti gel diesel fuel additive at numerous locations nationwide.

Have questions or comments about this or other Howes premium-quality products? We want to hear from you! Contact us today for more information.





See what Diesel Treat can do for your diesel engine.

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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