Gasoline & Diesel
Fuel Additives for
All Seasons
Enhanced Reliability, Safety, and Performance
“Since partnering with AFS, we’ve seen a complete transformation in how our fuels perform during the winter months, resulting in smoother operations, fewer emergency calls, and a stronger reputation for dependable fuel quality.”
— Ed Novack, Button Energy
Optimize Your Fuel. Decrease Maintenance Costs. Reduce Risk.
Our custom additives enhance fuel stability, reducing injector deposits, corrosion, water contamination, and soot and sludge buildup. Keeping your fuel systems cleaner and engines running more efficiently means fewer roadside breakdowns and costly repairs, more reliable delivery schedules, and safer drivers.
A Leader in
Fuel Innovation
and Optimization
With over three decades of field success, AFS is a leader in fuel innovation and optimization. We help fleet and terminal managers, distributors, and others ensure consistent fuel quality throughout the distribution chain for cleaner, more sustainable energy.
Our Customers:
Fleet Managers
Terminal Operators
Fuel Wholesalers & Distributors
Marine Operators
Optimum Performance Technology™
Our Optimum Performance Technology (OPT) product line addresses a full spectrum of treatment needs—from heavy-duty diesel engines and sub-zero cold flow reliability to modern gasoline direct-injection systems and specialty storage applications.
Optimum Performance Technology™
Our Optimum Performance Technology (OPT) product line addresses a full spectrum of treatment needs—from heavy-duty diesel engines and sub-zero cold flow reliability to modern gasoline direct-injection systems and specialty storage applications.
Engine Products
OPT™ - Tank Dry
Diesel, Gasoline, and Heating Oil Additive
Get year-round fuel and tank protection with our OPT Moisture/AD (Tank Dry) additive for diesel, gasoline, and heating oil. It reduces water contamination in storage tanks, preventing corrosion, rust, and fuel degradation. Tank Dry also acts as a water “anti-freeze,” keeping your fuel systems clean and reliable. For on- and off-road diesel applications, it limits sulfur levels to 15 ppm.
“Tank Dry has become part of our preventative maintenance routine. We’re maintaining clean, dry fuel and reliable tank readings year-round.”
— Jesse Balmer, Fleet Manager at Penn Valley Gas
OPT™ - Tank Dry
Gasoline Additive
Maximize the performance and efficiency of your gasoline engines, keep intake valves and injectors in peak condition, improve fuel economy, and reduce harmful emissions with OPT-GA. Engineered for all gasoline platforms, including direct-injection and traditional port-fuel-injection systems, our gasoline additive is a fully scalable EPA- and TOP TIER™-certified formulation.
“Product differentiation was our goal. By branding our gasoline and introducing pump toppers that highlight OPT-GA, we were able to showcase fuel quality and give customers confidence they’re getting a premium product.”
— Andy Bradigan, Owner, Bradigan's INC.
OPT™ - Tank Dry
Premium Winter Diesel Fuel Additive
OPT-Winter AD combines the performance-enhancing benefits of our all-season fuel additive (OPT-AD) with the advanced protection of our Cold Flow Improver (OPT-CFI). A next-generation detergent, balanced with dual stabilizers and corrosion inhibitors, OPT-Winter AD addresses the documented challenges of high-pressure common rail (HPCR) fuel injection systems.
“We’ve cut downtime by nearly 20% and doubled our filter life since working with AFS. Their testing and custom formula made an immediate difference.”
— Fleet Manager, Regional Transit Authority
OPT™ - Tank Dry
Cold Flow Technology
Say goodbye to gelling and clogged filters and keep your diesel fuel performing its best when temperatures drop. Engineered with advanced polymers, synergists, and proprietary wax-management components, OPT-CFI maintains consistent performance, protects equipment, and ensures reliable operation in even the harshest winter conditions.
“MPG loss, shortened filter life, regen issues—we don’t have these problems since using the AFS fuel treatment program. My mechanic has told me, ‘Whatever you’re doing, keep doing it."
— Eric Wyson, EJ Wyson Trucking
OPT™ - Tank Dry
All-Purpose Diesel Fuel Additive
Unlock the full potential of your diesel fuel with OPT-AD, an all-purpose diesel fuel additive designed to improve power, reduce diesel engine regeneration, decrease maintenance issues, and extend the life of your fleet and equipment. It keeps injectors clean, protects critical fuel-delivery components, and ensures consistent flow and combustion, helping your engines run at peak efficiency year-round.
“We’ve cut downtime by nearly 20% and doubled our filter life since working with AFS. Their testing and custom formula made an immediate difference.”
— Fleet Manager, Regional Transit Authority
Oilheat Products
OPT™ - M5
Cold-flow Improver for Blends up to B50
OPT M5 is an advanced cold-flow improver engineered for ultra-low sulfur heating oil, diesel, and biodiesel blends stored in outdoor tanks. Its proprietary cold-flow polymers and anti-settling technology help eliminate waxing, filter plugging, and restricted fuel flow, providing exceptional low-temperature performance in blends up to B50.
“Product differentiation was our goal. By branding our gasoline and introducing pump toppers that highlight OPT-GA, we were able to showcase fuel quality and give customers confidence they’re getting a premium product.”
— Andy Bradigan, Owner, Bradigan's INC.
OPT™ - M5
Cold-flow Treatment for Outdoor Tanks
HeatDoc™ SZP is a cold-weather conditioner for ultra-low-sulfur and biodiesel-blended heating oil. Formulated for outdoor tanks, it provides the protection of HeatDoc ASC, PLUS a pour-point depressant and jet-fuel-type deicer to enhance performance and reliability when temperatures plummet. Unlike other cold-flow treatments, Heat Doc SZP doesn’t require kerosene blending.
"HeatDoc™ SZP helps us deliver fuel that performs more consistently across seasons, which directly supports our goal of reducing avoidable emergency service calls and their associated risks, while taking better care of our customers.”
— Fleet Manager, Regional Transit Authority
OPT™ - M5
All-season Conditioner for Indoor Tanks
Protect fuel quality year-round with HeatDoc™ ASC, an all-season conditioner for ultra-low sulfur heating oil and biodiesel blends. Formulated for indoor tanks, its powerful blend of stabilizers, corrosion inhibitors, dispersants, and yellow-metal deactivators delivers cleaner fuel, improved storage integrity, and enhanced protection for your customers’ heating systems.
"Any time we can prevent a fuel-related service call before it happens, it improves the experience for both our customers and our service team."
— Scott E. MacFarlane, Vice President, MacFarlane Energy
Marine Products
OPT™ Workboat
Commercial Marine Fuel Additive
OPT™ Workboat is a fuel additive developed for the demanding commercial marine environment and used by fishing vessels, ferries, tugboats, charter fleets, and other diesel-powered operations. By maintaining clean fuel systems, improving engine performance, and reducing maintenance costs, OPT™ Workboat helps reduce operating expenses while protecting fragile marine ecosystems.
OPT™ Workboat
Premium Marine Fuel Additive
Slipstream® addresses the problems of today’s fuels, including ethanol degradation, water contamination, injector fouling, and cold-start issues. Formulated to enhance marine engine power, performance, reliability, and protection, SlipStream® offers your customer a better boating experience, helping you differentiate your brand.
OPT-AD | All-Purpose Diesel Fuel Additive
Unlock the full potential of your diesel fuel with OPT-AD, an all-purpose diesel fuel additive designed to improve power, reduce diesel engine regeneration, decrease maintenance issues, and extend the life of your fleet and equipment. It keeps injectors clean, protects critical fuel-delivery components, and ensures consistent flow and combustion, helping your engines run at peak efficiency year-round.
“We’ve cut downtime by nearly 20% and doubled our filter life since working with AFS. Their testing and custom formula made an immediate difference.”
— Fleet Manager, Regional Transit Authority
OPT-CFI | Cold Flow Technology
Say goodbye to gelling and clogged filters and keep your diesel fuel performing its best when temperatures drop. Engineered with advanced polymers, synergists, and proprietary wax-management components, OPT-CFI maintains consistent performance, protects equipment, and ensures reliable operation in even the harshest winter conditions.
“MPG loss, shortened filter life, regen issues—we don’t have these problems since using the AFS fuel treatment program. My mechanic has told me, ‘Whatever you’re doing, keep doing it."
— Eric Wyson, EJ Wyson Trucking
OPT-GA | Gasoline Additive
Maximize the performance and efficiency of your gasoline engines, keep intake valves and injectors in peak condition, improve fuel economy, and reduce harmful emissions with OPT-GA. Engineered for all gasoline platforms, including direct-injection and traditional port-fuel-injection systems, our gasoline additive is a fully scalable EPA- and TOP TIER™-certified formulation.
“Product differentiation was our goal. By branding our gasoline and introducing pump toppers that highlight OPT-GA, we were able to showcase fuel quality and give customers confidence they’re getting a premium product.”
— Andy Bradigan, Owner, Bradigan's INC.
OPT-Moisture/AD Tank Dry | Diesel, Gasoline, and Heating Oil Additive
Get year-round fuel and tank protection with our OPT Moisture/AD (Tank Dry) additive for diesel, gasoline, and heating oil. It reduces water contamination in storage tanks, preventing corrosion, rust, and fuel degradation. Tank Dry also acts as a water “anti-freeze,” keeping your fuel systems clean and reliable. For on- and off-road diesel applications, it limits sulfur levels to 15 ppm.
“Tank Dry has become part of our preventative maintenance routine. We’re maintaining clean, dry fuel and reliable tank readings year-round.”
— Jesse Balmer, Fleet Manager at Penn Valley Gas
Get a FREE Fuel Analysis
Take the guesswork out of your fuel quality with a complimentary fuel analysis. Our experts will test your fuel for contamination, stability, water content, microbial activity, and other factors that affect performance. The results give you a clear, data-driven understanding of your fuel’s condition so you can address problems before they lead to breakdowns, costly repairs, or downtime.
Beyond Fuel Additives:
We don’t just sell fuel additives; our expert team partners with you to optimize performance with a solution that is customized to your specific needs. Our services are provided through a three-pronged approach:
Fuel Testing and Monitoring
We regularly test and monitor the quality of your fuel to provide the insights we need to optimize its performance and reduce your long-term costs.
Custom Fuel Formulations
We fine-tune your additive package to ensure it is properly tailored to your fuel, storage environment, and operational demands.
Ongoing Support
We provide the support you need to make the most of your fuel additive program. Questions? Answers are a call or click away.
Our Passion Fuels Your Success
Our customized fuel additives help fuel wholesalers, distributors, trucking fleets, marinas, and other fuel end users succeed by improving operational reliability, reducing maintenance costs, enhancing customer satisfaction, and supporting regulatory compliance requirements. Offering field-proven solutions and expert support, we support the following industries and applications:
By preventing corrosion, reducing deposits, and enhancing fuel stability, our advanced solutions help protect terminal assets, ensuring the longevity and efficiency of storage and handling equipment. This reduces operational disruptions and lowers maintenance costs.
Our advanced fuel solutions significantly enhance diesel engine performance and longevity by improving combustion efficiency, reducing engine deposits, and preventing wear and tear.
By improving marine fuel quality, our customized marine fuel additives increase engine efficiency and performance, reduce emissions, and ensure compliance with stringent environmental regulations designed to protect marine ecosystems.
Our low-carbon fuel additives reduce emissions and improve efficiency, supporting our commitment to cleaner, more sustainable energy sources.
Improve Fuel Performance and Your Bottom Line
Backed by decades of experience and a commitment to exceptional service, our customized solutions are grounded in a proven approach that goes beyond improving fuel quality. They drive substantial improvements in your bottom line, demonstrating the tangible benefits of partnering with a leader in fuel innovation and optimization. Contact our team today.
NEWS
“With our heating oil additive, HeatDoc™, we are able to stabilize the fuel over a long period of time—that’s the time of year when the heating system isn’t being used—call it April to October. During this time, moisture can come from the outside into the tank. By stabilizing the fuel with HeatDoc™, we’re able to ensure when the burner finally calls for oil, they have a good quality fuel. Fuel quality is not an issue for us anymore.”
— Mark Brideau – President, Brideau Energy
“We are excited to expand our relationship with AFS from the construction fueling industry to the waterways. Delivering our customers the highest quality marine diesel and gasoline possible is our joint goal.”
— Rick Workman – President, Taylor Oil
“AFS continues to be a critical partner in the success of my business. Back in 1990, when we first experienced fuel-related challenges with outside tanks, they personally stepped forward to help solve the problem and educate me on the critical issue of fuel quality.”
— Charlie Ugiletto – President, Cubby Oil Company.
“With AFS fuel conditioners, we keep our fleet on the road profitably. It’s important to have 24/7 access to high-quality fuel conditioners, testing, and lab services.”
— Kris Lee, Weaver Energy, Lilitz, PA
“We have had very good results using the AFS fuel additives at several locations now. We have been able to double the life of fuel filters, which pays for the product. In addition, we are conservatively seeing a .5% improvement in better fuel mileage. With AFS working with our local fuel suppliers, the results are good. In addition, while it is still early, we seem to have a reduction in fuel-related issues on the newer EPA engines.”
— Fleet Maintenance Manager of a 500+ Power Unit Agricultural Organization
“We’ve been working with AFS for three decades. Paul and his team are extremely knowledgeable about additives—they’re always educating and innovating—but really it’s the energy, enthusiasm, and proactive approach to service that set this strategic partner apart from all others. We feel we couldn’t do better with any other company.”
— Terminal Operations, Global Partners
