15 Best Cold Weather Diesel Additives for 2026
You want the best cold weather diesel additives that prevent fuel gelling, ice buildup, and corrosion in freezing temperatures down to -40°F. Look for trusted products like Lucas Oil Anti-Gel, Power Service Diesel Supplement, STA-BIL Diesel Winter, and Hot Shot’s Secret.
These additives boost cetane, disperse water, and keep filters clean for reliable starts and smooth performance.
Many come in easy-to-use bottles treating up to 250 gallons, making winter maintenance simple and efficient. Keep your engine protected, efficient, and ready for harsh winter conditions.
Exploring top options helps you find the best fit for your needs.
Lucas Oil 10866 Anti-Gel Cold Weather Diesel Additive – 64 fl. oz.
Lucas Oil 10866 Anti-Gel Cold Weather Diesel Additive is designed to keep your diesel fuel flowing smoothly when temperatures plummet. Fuel gelling can cause serious engine issues, but this additive works by dispersing water throughout your fuel system. It prevents moisture buildup that leads to thickening and clogged filters, ensuring your engine starts and runs reliably in cold weather.
This formula is specially made to lower the cold filter plugging point in both ultra-low sulfur diesel (ULSD) and biofuels. By improving fuel flow, it helps maintain consistent engine performance despite freezing conditions. The additive is safe for use with diesel particulate filters, protecting sensitive engine components from potential damage.
Maintenance is simple with this product. Adding the correct dose to your fuel tank before cold conditions arrive helps avoid downtime and costly repairs. The 64 fl. oz. bottle provides a convenient amount for regular use, making it easy to keep your fuel system in top condition throughout winter.
While only available in one bottle size, its concentrated formula ensures effective protection with proper handling and dosing. This additive is a practical solution for anyone needing to prevent diesel fuel gelling and maintain engine reliability in cold climates.
Best for: operators of diesel or bio-diesel engines who require dependable fuel performance and protection during winter months.
What We Like:
- Disperses water to prevent fuel thickening and filter clogging.
- Safe for diesel particulate filters and sensitive engines.
- Effective for both ULSD and biofuels.
- Convenient 64 fl. oz. bottle size.
- Helps maintain engine performance in freezing temperatures.
Specification:
| Specification | Details |
|---|---|
| Manufacturer | Lucas Oil |
| Volume | 64 fl. oz. (1.89 L) |
| Suitable Fuels | Diesel, ULSD, Biofuels |
| Application | Cold weather diesel additive |
| Package Dimensions | Not specified |
| Color Options | Not specified |
Power Service Diesel Fuel Supplement Antigel 64 oz., Pack of 1
Power Service Diesel Fuel Supplement Antigel is designed to keep your diesel engine running smoothly in cold weather. It effectively prevents fuel from gelling and stops fuel-filter icing, common problems that cause hard starts during freezing temperatures. This additive improves cold-start performance by boosting cetane, helping your engine fire up faster and more reliably.
The formula includes Slickdiesel Lubricator, a key ingredient that protects your fuel pumps and injectors from wear caused by Ultra Low Sulfur Diesel (ULSD) and biodiesel blends. This protection helps maintain your fuel system’s longevity and efficiency, reducing the need for costly repairs. The product comes in a convenient 64 oz. size, weighing 4.2 pounds for easy handling and storage.
Regular use of this diesel fuel supplement ensures better engine maintenance during winter months. By preventing fuel gelling, it reduces downtime and increases overall vehicle reliability. It’s simple to use and fits well into routine diesel fuel maintenance, making it a practical choice for operators in cold climates.
However, its single 64 oz. size might not meet all consumption needs, and the product’s weight may be less ideal for frequent handling. Despite these minor drawbacks, it remains a strong option to improve diesel engine cold-weather performance.
Best for: Diesel vehicle owners and operators needing reliable protection against fuel gelling and fuel-filter icing in freezing conditions while ensuring smoother cold starts.
What We Like:
- Prevents fuel gelling and fuel-filter icing in cold weather
- Contains Slickdiesel Lubricator to reduce wear on fuel pumps and injectors
- Boosts cetane for faster and easier cold starts
Specification:
| Feature | Details |
|---|---|
| Manufacturer | Power Service |
| Volume | 64 oz. (1.89 liters) |
| Weight | 4.2 lb (1.9 kg) |
| Intended Use | Diesel fuel anti-gel additive |
| Key Ingredient | Slickdiesel Lubricator |
STA-BIL Diesel Winter Ant-Gel Fuel Additive
STA-BIL Diesel Winter Ant-Gel is designed to keep your diesel fuel flowing smoothly even in extreme cold. It effectively lowers the cold filter plugging point by up to 36°F, preventing fuel from gelling in temperatures as low as -40°F. This ensures your engine starts reliably and runs without interruption during harsh winter weather.
This additive also improves fuel system maintenance by de-emulsifying water. By separating water from diesel, it protects your fuel system from corrosion and makes water separators work more efficiently. Cleaner fuel means less wear and tear on your engine parts, helping to maintain performance over time.
In addition, STA-BIL Diesel Winter Ant-Gel cleans injectors to support optimal fuel atomization. This leads to better combustion and engine efficiency, which is critical for maintaining power and reducing emissions during cold months. The product is easy to use, with one 32 fl. oz. bottle treating up to 250 gallons of diesel fuel.
While primarily designed for winter use, this additive is a practical solution for anyone who needs reliable diesel flow in cold climates. Keep in mind that larger tanks may require multiple bottles, and accurate measurement is necessary for best results.
Best for: Diesel vehicle owners and operators in cold climates who need to prevent fuel gelling and maintain fuel system performance during winter.
What We Like:
- Prevents fuel gelling down to -40°F for reliable engine starts.
- Cleans injectors to improve fuel atomization and engine efficiency.
- De-emulsifies water to protect fuel systems from corrosion.
- One bottle treats 250 gallons, offering cost-effective winter protection.
Specification:
| Feature | Details |
|---|---|
| Manufacturer | STA-BIL |
| Volume | 32 fl. oz. (946 ml) |
| Treats | Up to 250 gallons |
| Cold Protection | Effective to -40°F |
| Application | Diesel fuel additive |
Power Service 1025-12PK Diesel Fuel Supplement (12 Pack)
Power Service 1025-12PK Diesel Fuel Supplement offers reliable protection for diesel engines during harsh cold weather. This additive effectively prevents fuel gelling and filter icing, ensuring your engine starts smoothly even when temperatures drop below 30°F. It improves cold-weather performance by boosting cetane levels, helping your diesel run more efficiently in winter conditions.
Designed to maintain engine health, this supplement contains lubricators that reduce wear on fuel pumps and injectors caused by low-quality diesel blends. Its compatibility with ULSD and biodiesel makes it versatile for various fuel types, providing consistent protection and performance. Each quart bottle is packaged in a convenient 12-pack, ideal for extended use or multiple vehicles.
Regular use of this product can help prevent costly repairs related to fuel system damage and improve engine reliability during cold spells. While it is best suited for cold weather, using it only when temperatures fall below 30°F maximizes its effectiveness. The 12-pack format may be more than necessary for occasional users but offers good value for frequent use.
Best for: diesel engine owners seeking dependable fuel protection and enhanced engine performance during cold weather conditions below 30°F.
What We Like:
- Prevents fuel gelling and filter icing in cold temperatures
- Boosts cetane for quicker starts and smoother operation
- Contains lubricators to protect fuel pumps and injectors
- Compatible with ULSD and biodiesel blends
- Convenient 12-pack for multiple uses or vehicles
Specification:
| Feature | Details |
|---|---|
| Manufacturer | Power Service |
| Package Size | 12 quarts (12-pack) |
| Compatible Fuels | ULSD, Biodiesel blends |
| Temperature Use | Below 30°F |
| Bottle Volume | 1 quart (946 ml) |
Hot Shot’s Secret Diesel Extreme Fuel Additive
Hot Shot’s Secret Diesel Extreme Fuel Additive tackles tough diesel engine issues with ease. Designed to clean injectors and improve fuel quality, it helps eliminate deposits that cause rough starts and poor acceleration. This additive is ideal for anyone struggling with cold starts or sluggish engine performance.
The concentrated 32-ounce formula treats up to 80 gallons of diesel fuel, flushing out water, sludge, and harmful buildup. By restoring injector cleanliness, it enhances combustion efficiency for smoother idling and stronger power delivery. Its anti-oxidation properties also protect the fuel system from wear and corrosion.
Maintenance becomes simpler with this additive, as it supports ongoing injector health and fuel system reliability. The lavender scent adds a subtle, user-friendly touch without overpowering. Using this product regularly helps maintain diesel engine performance, especially in colder climates where starting can be challenging.
While it is highly effective for diesel engines, this formula is not suitable for gasoline-powered vehicles. Large fuel tanks may require multiple bottles for treatment, and the lavender scent may not suit every user’s preference. Despite these considerations, it remains a practical solution for diesel engine upkeep.
Best for: Diesel vehicle owners seeking to improve engine performance, fuel efficiency, and injector cleanliness, especially in cold weather conditions.
What We Like:
- Effectively cleans diesel injectors and removes deposits
- Boosts cetane for quicker, smoother cold starts
- Protects fuel system against oxidation and corrosion
- User-friendly lavender scent
- Concentrated formula treats up to 80 gallons
Specification:
| Attribute | Details |
|---|---|
| Manufacturer | Hot Shot’s Secret |
| Volume | 32 fl oz (946 ml) |
| Coverage | Treats up to 80 gallons |
| Suitable Fuel | Diesel only |
| Scent | Lavender |
Warm Weather Blend Diesel Additive 2 Pack (16oz)
Experience smoother starts and improved engine performance with the Warm Weather Blend Diesel Additive. Designed for use in temperatures above 40°F, this additive tackles common diesel engine problems like deposits and corrosion. It works by cleaning fuel systems and enhancing combustion, so your engine runs quieter and more efficiently.
This 2-pack treats up to 120 gallons of fuel, making it easy to maintain your diesel vehicle’s health over time. Regular use helps lubricate fuel system parts and prevents corrosion, extending the life of critical components. It also stabilizes fuel quality by separating water and reducing buildup, which supports consistent engine operation.
Ideal for drivers in warm climates, this additive improves fuel economy and boosts horsepower by optimizing the combustion process. While it’s tailored for higher temperatures, ongoing use ensures your diesel engine remains protected throughout the season. Keep your vehicle running strong with this essential maintenance product.
Available through authorized dealers, the Warm Weather Blend Diesel Additive offers a practical solution to common diesel engine issues. Its focus on fuel system care and performance enhancement makes it a valuable addition to your vehicle upkeep routine.
Best for: Diesel vehicle owners who regularly drive in warm conditions and want to maintain engine efficiency and fuel system protection.
What We Like:
- Effectively cleans fuel system deposits to improve horsepower and torque
- Lubricates fuel system components and prevents corrosion
- Enhances combustion for easier starts and quieter engine operation
- Stabilizes fuel and separates water to maintain quality
Specification:
| Feature | Details |
|---|---|
| Manufacturer | Stanadyne |
| Package Size | 2 x 16 oz (32 oz total) |
| Fuel Treated | Up to 120 gallons |
| Recommended Temp | Above 40°F (Warm Weather) |
| Application | Diesel engines |
Total Power Cold Weather Diesel Fuel Treatment 32oz
Total Power Cold Weather Diesel Fuel Treatment 32oz is designed to keep diesel engines running smoothly in freezing conditions. It tackles the common problem of diesel fuel gelling or thickening when temperatures drop, ensuring consistent fuel flow. This reliable treatment helps maintain engine performance and prevents cold-weather startup issues.
The formula goes beyond anti-gel protection by including cleaning agents that reduce deposits on fuel injectors. This helps maintain fuel system cleanliness and efficiency over time. Additionally, it disperses moisture within the fuel, reducing risks of corrosion and fuel system damage.
Suitable for diesel trucks, generators, agricultural machinery, and heavy equipment, this treatment supports a wide range of diesel-powered applications. Its 32-ounce size offers enough volume to treat multiple tanks or large equipment, making it a practical choice for regular winter maintenance.
While it provides effective cold-weather protection and fuel system care, it does not come with a manufacturer warranty. It is also limited to a 30-day return policy, which may be a consideration for some users. Overall, it delivers solid cold-weather diesel fuel treatment in a convenient bottle.
Best for: operators of diesel engines in cold climates who need to prevent fuel gelling and maintain fuel injector cleanliness.
What We Like:
- Prevents diesel fuel from gelling in freezing temperatures
- Contains cleaning agents to reduce injector deposits
- Disperses moisture to protect the fuel system
- Suitable for various diesel-powered vehicles and equipment
Specification:
| Feature | Details |
|---|---|
| Manufacturer | Total Power |
| Volume | 32 oz (946 ml) |
| Compatible With | Diesel trucks, generators, agricultural equipment, heavy machinery |
| Function | Cold weather diesel fuel treatment |
PEAK Blue 32oz Anti-Gel Diesel Additive
PEAK Blue 32oz Anti-Gel Diesel Additive is designed to keep your diesel engine running smoothly in harsh winter conditions. Fuel gelling can cause serious engine problems during freezing temperatures, but this additive prevents it effectively. It ensures your diesel fuel stays fluid, helping to avoid costly breakdowns when you need your vehicle most.
This 32-ounce formula also boosts cetane levels, which improves combustion efficiency and engine performance. By cleaning injectors, it helps maintain optimal fuel delivery and reduces engine deposits. Regular use supports better fuel system health and consistent engine operation, even in extreme cold.
The product is easy to store and apply, weighing just 2 pounds for convenient handling. Manufactured by Old World Automotive, it is formulated specifically for diesel engines facing cold weather challenges. Its anti-gel properties protect your fuel system from damage caused by wax crystals forming in low temperatures.
While only available in a 32-ounce size, it offers reliable protection for winter driving. The additive is primarily sold online, which may limit immediate local availability but provides easy access for most users. Its focused design makes it a practical solution for winter diesel engine maintenance.
Best for: Diesel vehicle owners seeking dependable fuel performance and protection against fuel gelling in cold weather.
What We Like:
- Prevents fuel gelling to maintain engine reliability in freezing conditions
- Boosts cetane and cleans injectors for improved combustion
- Compact and lightweight for easy storage and use
- Formulated specifically for diesel engines in winter climates
Specification:
| Manufacturer | Old World Automotive |
|---|---|
| Volume | 32 ounces (946 ml) |
| Weight | 2 pounds (0.91 kg) |
| Intended Use | Diesel fuel anti-gel additive |
| Primary Benefit | Prevents fuel gelling and improves combustion |
Opti-Lube Winter Anti-Gel Diesel Additive (6 Pack)
Opti-Lube Winter Anti-Gel Diesel Additive is designed to keep your diesel fuel flowing smoothly even in the coldest weather. This additive tackles the common issue of diesel gelling, which can cause engine problems and downtime in freezing temperatures. It protects your fuel down to -40°F, ensuring your vehicle or equipment starts and runs reliably.
Beyond preventing gel formation, Opti-Lube also cleans fuel injectors, which helps maintain engine efficiency and performance. Its ability to boost the fuel’s Cetane rating by up to 3 points contributes to smoother combustion and better power delivery. This makes it a practical choice for anyone relying on diesel-powered machinery in winter.
Maintenance is straightforward with this product. Each 8oz bottle treats up to 32 gallons of diesel, making it suitable for trucks, farm equipment, and storage tanks. Regular use before temperatures drop helps maximize protection and fuel cleanliness. Additionally, it separates water in the fuel, reducing corrosion and extending fuel life.
While highly effective, it requires timely application before severe cold hits. The treatment volume means larger tanks may need multiple bottles. Results can vary depending on fuel type and environmental conditions, so proper use is key to getting the best performance.
Best for: Diesel vehicle owners, fleet operators, and equipment users needing reliable cold-weather fuel protection and injector cleaning.
What We Like:
- Prevents diesel fuel gelling down to -40°F for reliable cold starts.
- Cleans fuel injectors and improves fuel combustion with a Cetane boost.
- Helps separate water to reduce corrosion and extend fuel storage life.
- Suitable for trucks, farm equipment, and storage tanks.
- Easy-to-use 8oz bottles treat up to 32 gallons of diesel.
Specification:
| Feature | Details |
|---|---|
| Manufacturer | Opti-Lube |
| Package Size | 6 x 8oz bottles |
| Treatment Volume | 8oz per 32 gallons |
| Cold Protection | Down to -40°F |
| Application | Diesel fuel additive |
Alliant Power WINTERGUARD Diesel Fuel Treatment – Pack of 4 Pints # AP0506
Alliant Power WINTERGUARD Diesel Fuel Treatment is designed to keep your diesel engine running smoothly in freezing conditions. It targets common cold-weather issues like fuel gelling and ice formation, which can disrupt fuel flow and cause engine starting problems. This solution helps maintain consistent fuel flow even in extreme temperatures, reducing downtime and engine stress.
Each 16-ounce bottle treats up to 125 gallons of diesel, making it efficient for maintaining your fuel system during the winter months. By lowering the pour point and filter plug point by up to 40°F, it prevents wax buildup that can clog fuel lines and filters. This treatment improves cold starts and keeps your engine performing reliably when you need it most.
The formula also enhances fuel quality with superior cetane and lubricity. This not only boosts combustion efficiency but also reduces wear on fuel system components. Using WINTERGUARD regularly supports engine longevity and smoother operation in harsh climates.
This product comes in a pack of four pints, offering enough supply for extended use or multiple vehicles. While the pack size may be more than what some users require, it ensures you have ample treatment on hand throughout the cold season.
Best for: Diesel vehicle owners and operators needing to prevent fuel gelling and improve engine performance in cold weather.
What We Like:
- Prevents fuel gelling and ice buildup in extreme cold
- Treats up to 125 gallons of diesel per 16-ounce bottle
- Lowers pour and filter plug points by up to 40°F
- Enhances cetane and lubricity for better engine function
- Available in convenient four-pint packs
Specification:
| Feature | Details |
|---|---|
| Manufacturer | Alliant Power |
| Package Size | 4 pints (16 oz each) |
| Treatment Capacity | Up to 125 gallons per bottle |
| Product Number | AP0506 |
| Color | Clear Liquid |
Hot Shot’s Secret DEF Booster Additive 8 oz
Hot Shot’s Secret DEF Booster Additive 8 oz is designed to keep your diesel’s SCR system running smoothly by preventing harmful crystal buildup. This additive works by stabilizing and lubricating DEF fluid, which reduces corrosion and crystallization that can damage sensors, injectors, and pumps. By adding just 1 oz per 2.5 gallons of DEF, it helps protect your vehicle’s emissions system and avoid costly repairs.
Regular use of this DEF additive ensures that your SCR system remains clean and efficient, especially in cold weather when crystallization risks increase. It helps prevent trouble codes like P20EE and P204F, which often result from DEF system buildup. Maintaining your DEF fluid with this booster supports reliable engine performance and prolongs the life of key components.
Each 8 oz bottle treats up to 20 gallons of DEF, making it practical for everyday maintenance. While consistent dosing at every fill-up is necessary for the best results, the additive’s clear benefits include reducing the risk of corrosion and keeping your DEF system functioning properly.
Though it’s not a fix for severe SCR system damage, Hot Shot’s Secret DEF Booster Additive serves as a preventative solution that helps diesel owners avoid common DEF-related issues and maintain optimal system performance.
Best for: Diesel truck owners looking to prevent SCR system crystal buildup and maintain reliable DEF system operation.
What We Like:
- Effectively prevents white crystal buildup and corrosion
- Lubricates and stabilizes DEF fluid in various weather conditions
- Easy to dose with every DEF refill
- Helps avoid SCR system trouble codes
- Supports long-term DEF system health
Specification:
| Feature | Details |
|---|---|
| Manufacturer | Hot Shot’s Secret |
| Volume | 8 oz (237 ml) |
| Treatment Ratio | 1 oz per 2.5 gallons of DEF |
| Coverage | Treats up to 20 gallons DEF |
| Color | Clear liquid |
Primrose Winter Klenz 5757 Prem Diesel Additive – Quart
Primrose Winter Klenz 5757 Prem Diesel Additive offers dependable winter protection for diesel engines. It tackles fuel gelling and icing, common problems that disrupt engine performance in freezing temperatures. This additive ensures smooth cold starts by maintaining fuel flow and preventing blockages caused by ice.
Designed to enhance diesel fuel quality, it raises the cetane number by 40 points with Xtreme Torque technology. This improvement boosts ignition efficiency and engine power, helping vehicles perform better in harsh conditions. The additive also includes Ice Check™ to defend against freeze-up, keeping engines running smoothly.
Maintenance is simplified as the additive cleans injectors, improving fuel delivery and reducing clogging. It also protects against corrosion and increases lubricity, which extends engine life. Compatible with traditional and high-pressure common rail (HPCR) diesel engines, it supports a wide range of vehicles.
While the product comes in a convenient quart size, larger tanks may require multiple bottles. Its winter-focused formula is highly effective in cold climates but offers limited benefits in warmer weather. The Primrose Winter Klenz 5757 is a practical solution for maintaining diesel engine performance during winter.
Best for: drivers and operators of diesel engines needing reliable winter fuel protection to prevent gelling, improve cold starts, and maintain engine performance in freezing conditions.
What We Like:
- Prevents fuel gelling and icing for reliable cold starts
- Boosts cetane number by 40 points with Xtreme Torque
- Compatible with traditional and HPCR diesel engines
- Includes Ice Check™ freeze-up defense and injector cleaning
- Enhances lubricity and reduces filter clogging
Specification:
| Feature | Details |
|---|---|
| Manufacturer | Primrose |
| Size | 1 quart (946 ml) |
| Compatible Engine Types | Traditional and HPCR diesel |
| Key Technologies | Xtreme Torque, Ice Check™ |
| Application | Diesel fuel additive |
Schaeffer Diesel Treat 2000 Fuel Additive (1-Gallon)
Schaeffer Diesel Treat 2000 is designed to tackle the challenges of cold weather diesel operation. It helps prevent fuel gelling by lowering the cold filter plugging point, ensuring your engine runs smoothly even in freezing temperatures. By controlling moisture, it reduces the risk of fuel system damage caused by water contamination.
This additive also supports engine maintenance by fighting rust and corrosion inside the fuel system. Protecting these components helps extend the lifespan of your diesel engine. Additionally, it enhances combustion efficiency, which can improve fuel economy by up to 3%, helping you get more out of every gallon.
Using Schaeffer Diesel Treat 2000 regularly keeps your diesel running cleaner. It reduces emissions, exhaust smoke, and particulates, contributing to a cleaner environment and better engine health. Proper dosing is important to maximize benefits and avoid potential overdosing issues.
Schaeffer Diesel Treat 2000 is ideal for diesel vehicle owners who need dependable cold weather performance and comprehensive fuel system protection. Its formula is especially useful during winter months when fuel stability is critical.
Best for: Diesel vehicle owners and operators seeking reliable cold weather diesel performance and fuel system protection.
What We Like:
- Improves fuel economy by up to 3%
- Lowers cold filter plugging point for winter reliability
- Controls moisture to prevent fuel system damage
- Protects against rust and corrosion
- Reduces emissions and exhaust smoke
Specification:
| Attribute | Details |
|---|---|
| Manufacturer | Schaeffer |
| Volume | 1 gallon (3.78 liters) |
| Application | Diesel fuel additive |
| Primary Benefit | Cold weather fuel protection |
| Color | Amber liquid |
Heet Emergency De-Gel Diesel Fuel Additive 32oz
Heet Emergency De-Gel Diesel Fuel Additive is a dependable solution for diesel fuel problems during cold weather. When diesel gels or water contaminates the tank, this additive quickly restores fuel flow and engine performance. Its powerful solvent formula melts gelled diesel and eliminates trapped water, helping to avoid costly breakdowns.
This product also helps maintain your fuel system by de-icing filters and lubricating vital components. These actions protect delicate parts from wear and corrosion, extending engine life. By adding 32 ounces per 30 gallons of diesel, you can rapidly fix gelling issues and safely restart your engine.
After using Heet Emergency De-Gel, it’s recommended to apply STA-BIL Diesel Anti-Gel to prevent future fuel problems. Made in the USA by Gold Eagle Co., this additive treats up to 75 gallons of fuel, making it practical for a variety of diesel vehicles and equipment. It is designed specifically for diesel engines using federally regulated low sulfur fuel.
Best for: Diesel vehicle owners and operators who face fuel gelling and water contamination, especially in colder climates.
What We Like:
- Effectively liquefies gelled diesel and removes water contamination
- De-ices filters while lubricating fuel system components
- Treats up to 75 gallons of fuel per container
- Made in the USA by a reputable manufacturer
Specification:
| Feature | Details |
|---|---|
| Manufacturer | Gold Eagle Co. |
| Volume | 32 ounces (946 ml) |
| Fuel Treatment | Up to 75 gallons |
| Application Rate | 32 oz per 30 gallons fuel |
| Made In | USA |
Ford Fluid PM-23-A ULSD Anti-Gel Improver 20oz
Ford Fluid PM-23-A ULSD Anti-Gel Improver is a smart solution for diesel engine owners facing cold weather challenges. It prevents diesel fuel from gelling, ensuring your engine runs smoothly even in freezing temperatures. By disrupting wax crystal formation in fuel lines, filters, and tanks, this additive keeps your fuel flowing without the need for tank heaters.
This 20 oz concentrated formula is designed specifically for 12-volt diesel engines and complies with ULSD standards. It improves cold starts, reduces engine roughness, and can enhance fuel economy by maintaining consistent fuel flow. Regular use helps avoid costly downtime caused by fuel blockages in harsh winter conditions.
Maintenance is simple—just add the recommended amount to your fuel tank before cold weather hits. Its compatibility with all diesel fuel types makes it versatile for various diesel-powered vehicles. Manufactured by Ford under the trusted Motorcraft brand, it’s a reliable choice for keeping diesel engines performing at their best.
While only available in a 20 oz size, it’s concentrated enough for multiple uses, although larger tanks might need more frequent applications. The product is intended for online purchase, which may delay immediate access but ensures authenticity and quality.
Best for: Diesel engine owners in cold climates who need to prevent fuel gelling and improve engine performance during winter.
What We Like:
- Efficiently stops fuel gelling by breaking down wax crystals
- Enhances cold start reliability and engine smoothness
- Compatible with all diesel fuel types and ULSD compliant
- Concentrated formula suitable for multiple treatments
- Trusted Ford Motorcraft manufacturing quality
Specification:
| Feature | Details |
|---|---|
| Manufacturer | Ford |
| Brand | Motorcraft |
| Size | 20 oz (591 ml) |
| Compatibility | 12-volt diesel engines |
| Fuel Type | All diesel fuels |
| Compliance | ULSD |
Factors to Consider When Choosing a Cold Weather Diesel Additive
When choosing a cold weather diesel additive, you’ll want to focus on how well it improves cold flow and protects your fuel system.
Look for additives that boost cetane, disperse water, and clean injectors effectively. These factors guarantee your engine runs smoothly even in freezing temperatures.
Cold Flow Performance
Although cold weather diesel additives vary, their cold flow performance plays a crucial role in keeping your engine running smoothly in freezing conditions. You want an additive that lowers the cold filter plugging point (CFPP), allowing diesel to flow even at temperatures as low as -40°F. This prevents fuel gelling and keeps your engine reliable during harsh winters.
Look for additives that disperse and remove water from the fuel, which helps avoid freezing and related flow issues. Effective formulations include anti-gel agents and lubricants to maintain fuel viscosity and prevent wax crystals from forming. Choosing a high-quality cold flow additive extends diesel’s operational temperature range, reducing filter clogs and ensuring steady fuel flow when you need it most in extreme cold.
Fuel System Protection
Cold flow performance helps keep your diesel moving in freezing temperatures, but protecting your fuel system goes beyond just flow. You need additives with anti-gel agents that prevent fuel from gelling even at -40°F, ensuring your engine keeps running smoothly.
Look for water dispersants that remove moisture to reduce ice formation and corrosion risks inside your fuel lines. Lubricants in additives shield critical parts like pumps and injectors from wear caused by low-quality diesel.
Effective additives also lower the cold filter plugging point (CFPP), maintaining steady fuel flow during extreme cold. Regular use keeps your fuel clean, preventing deposits that clog injectors and filters.
Choosing the right additive means you safeguard your entire fuel system, not just improve cold weather fuel flow.
Cetane Boosting Ability
Three key benefits make cetane boosting ability an essential factor when choosing a cold weather diesel additive. First, it increases the cetane number, reducing ignition delay and ensuring quicker cold starts when temperatures drop. Second, higher cetane levels lead to smoother engine operation, cutting down on engine noise and improving combustion efficiency.
Third, cetane boosters enhance overall fuel efficiency and power output, which is critical when your engine faces harsh winter conditions. Most additives raise cetane by 1 to 4 points, depending on their formulation, so you’ll want one that fits your needs. Plus, improved cetane helps lower emissions and minimizes fuel system deposits over time, keeping your engine cleaner and running better through the cold season.
Water Dispersion Features
Water dispersion features play an essential role in choosing the right diesel additive for winter. When you pick an additive with effective water dispersants, it breaks water into smaller particles, making it easier to separate during fuel filtration. This helps prevent water-related issues like corrosion and freezing, which can damage your engine.
Proper water dispersion keeps your fuel stable and reduces the risk of ice formation in cold temperatures, ensuring your fuel stays free-flowing. It also prevents water buildup that could clog filters or harm injectors, maintaining your engine’s performance.
In harsh winter conditions, choosing an additive with strong water dispersion capabilities is vital to avoid gelling caused by moisture and to keep your diesel running smoothly all season long.
Injector Cleaning Power
Because diesel injectors are prone to buildup from deposits and sludge, choosing an additive with strong injector cleaning power is essential for winter performance. This cleaning power helps remove deposits that impair fuel atomization and combustion efficiency in cold weather. You want additives containing detergents designed to dissolve and suspend injector deposits, ensuring a cleaner spray pattern.
Maintaining clean injectors promotes better fuel combustion and prevents engine misfires during low temperatures. Using additives with effective injector cleaning regularly also reduces costly mechanical repairs caused by clogged injectors in winter. Injector cleaning power is often measured by how well the additive improves fuel spray quality and deposit removal after multiple cold starts, so look for products proven to keep your diesel engine running smoothly despite freezing conditions.
Compatibility With ULSD
When choosing a cold weather diesel additive, you need to guarantee it’s compatible with ULSD (Ultra Low Sulfur Diesel) to avoid damaging your fuel system. Some additives contain chemicals that react poorly with ULSD, risking fuel filter clogging, injector deposits, and reduced engine performance.
To protect your engine, pick additives specifically formulated for ULSD—they prevent gelling without harming fuel quality or emissions standards. Look for products that explicitly state ULSD compatibility to ensure they won’t interfere with the fuel’s low sulfur content or catalytic converter operation.
Many safe additives include anti-gel agents that maintain proper fuel flow by preventing wax crystal formation at low temperatures. Confirming compatibility helps you keep your diesel engine running smoothly all winter long.
Dosage And Coverage
Understanding the right dosage and coverage of a cold weather diesel additive is essential to keeping your engine running smoothly in freezing temperatures. Dosage usually ranges from 1 to 4 ounces per 32 to 60 gallons of fuel, depending on the product. Coverage varies widely; some additives treat as little as 30 gallons per 8-ounce bottle, while others cover over 250 gallons per container.
You need to follow the manufacturer’s instructions closely to avoid over- or under-dosing, which can impact fuel performance. Most additives specify how many gallons each unit treats, so you can easily calculate how many bottles you’ll need for your fuel volume. Using the proper dosage prevents gelling, water separation, and deposit buildup, vital for maintaining engine reliability in extreme cold.
Return And Warranty Options
After figuring out the right dosage to keep your engine running smoothly, you should also pay attention to the return and warranty options offered with cold weather diesel additives. Most products come with a 30-day return policy, especially when purchased from online retailers like Amazon, letting you return unused or defective items easily. Make sure to keep your receipt or order confirmation handy, as proof of purchase is usually required for refunds or exchanges.
Some manufacturers offer extended warranties or satisfaction guarantees beyond the standard return period, so check those details before buying. Since policies can vary by seller, product, and region, verifying specific terms beforehand guarantees you’re covered if the additive doesn’t meet your expectations or runs into issues later on.
Frequently Asked Questions
How Do Diesel Additives Affect Engine Warranty Coverage?
Using diesel additives usually won’t void your engine warranty if you follow manufacturer guidelines. But if an additive causes damage, the warranty might not cover repairs.
Always check your warranty terms before adding anything.
Can Diesel Additives Be Used in Biodiesel Blends?
Yes, you can use diesel additives in biodiesel blends. They improve cold flow, prevent gelling, and protect your engine.
Just make sure the additive is compatible with biodiesel to keep your engine running smoothly and efficiently.
Are Diesel Additives Safe for the Environment?
You’ll find many diesel additives designed to be environmentally safe, but it’s essential to choose biodegradable and non-toxic options.
Always check labels and certifications to make certain your additive won’t harm ecosystems or water sources.
How Often Should I Use Cold Weather Diesel Additives?
You should use cold weather diesel additives every time you fuel up during freezing temperatures. This keeps your fuel from gelling and guarantees smooth engine performance.
Don’t skip it when the weather turns cold.
Can Diesel Additives Improve Fuel Economy?
Yes, diesel additives can improve your fuel economy by cleaning injectors, reducing deposits, and enhancing combustion efficiency. You’ll notice smoother performance and potentially better mileage, especially when using high-quality additives regularly in your diesel engine.
These additives help maintain the engine’s efficiency over time, which can lead to cost savings at the pump. Regular use also supports overall engine health, preventing issues that could decrease fuel economy.
Conclusion
When temperatures drop, diesel fuel can gel and cause serious engine trouble. Did you know that using a cold weather diesel additive can improve fuel flow by up to 30% in freezing conditions? Choosing the right additive guarantees your engine starts smoothly and runs efficiently all winter.
With options like Lucas Oil and Power Service, you’ve got plenty of reliable choices. Don’t let cold weather slow you down—protect your diesel engine and keep moving no matter the chill!
For the best results, explore the 15 best cold weather diesel additives for 2026 to find the perfect solution for your needs. Staying prepared with the right diesel additive ensures optimal performance and fuel efficiency throughout the cold season.
