Fuel Additives

Our fuel additive solutions enhance performance, efficiency, and reliability across various fuel systems. Each additive that we offer is engineered to effectively fulfill different needs. We offer Winter Diesel fuel additives, premium emergency fuel treatment, fuel biocides, and many multi-functional additives. 

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Why Quality Fuel Additives Matter for Railroads

Locomotive fuel systems face extreme demands—from high-pressure injection to long idle periods and cold-weather startup. Over time, untreated diesel degrades, clogs injectors, forms microbial growth, and risks equipment failure.


Our advanced fuel additive formulations help railroads:

  • Improve cold flow and reduce winter gelling
  • Prevent microbial contamination and fuel tank corrosion
  • Enhance fuel lubricity and protect injectors
  • Stabilize biodiesel blends for cleaner combustion
  • Reduce exhaust emissions and maintenance intervals


Whether you're operating a small yard or a national fleet, fuel additives are a simple, cost-effective step toward better fuel performance, lower emissions, and longer equipment life.

Temple engineering Fuel Additives

Explore Our Fuel Treatment Solutions

  • Cold Flo F100

    Cold Flo F100 is a Winter Fuel Flow improver that is effective on distillate fuel used in the transportation industry. By modifying the wax crystal structure of the fuel, Cold Flo F100 reduces the pour point and cold filter plug point. Cold Flo 100 handles winter weather impeccably and is completely soluble in fuel distillates, eliminating the need for additional fuel blending and associated costs.

  • FT-350-Conlube

    FT-350-Conlube is an engineered multifunctional liquid fuel additive that dyes fuel red, increases fuel lubricity, and reduces static charge during fuel transfer.  It provides:

    • Red dye for IRS requirements
    • Lubricity improver to meet ASTM D975 Requirements (150ppm FT-350-Conlube reduces wear by 50 microns* as measure by ASTM D6079)
    • Fuel Anti-stat to meet ASTM D2624 or D4308 to reduce the risk of fuel explosion due to static build up during fuel transfer
  • FT-340

    FT-340 is an engineered multi-functional liquid fuel additive that increases fuel lubricity and reduces static charge during fuel transfer, which significantly lowers the risk of fuel explosion due to static build up.

  • FT-7270

    FT-7270 is a chlorine-free multi-functional additive package designed for use in all types of diesel fuel and gas oil, including biofuel blends. FT-7270 counteracts injector fouling and filter blockage in modern HSDI diesel engines, preventing the formation of black sludge and sediment. FT-7270 will improve drivability, increase fuel economy, recover lost power, and reduce exhaust emissions.

  • FT-7125

    FT-7125 is a winter multi-functional middle distillate fuel additive that prevents filter blockage, prevents sludging, cleans injectors in newer model-year vehicles that operate high pressure fuel injectors, lowers the pour point and cold filter plugging point to prevent fuel gelling in cold environments. FT-7125 cuts maintenance costs and downtime, restores lost horsepower, minimizes exhaust emissions, and protects engines from cold weather damage.

  • FT-7122 (RSQ)

    FT-7122 (RSQ) is a premium emergency diesel fuel treatment designed to quickly restore stalled or sluggish engines by dissolving wax and ice blockages throughout the fuel system. FT-7122 (RSQ) also contains detergent and cetane improver to enhance engine performance and reduce cranking times during restarts. It is made entirely of ashless organic compounds and contains no methanol.

  • Fuel Biocides

    We provide a variety of fuel biocides that eliminate and help prevent any microbial contamination in fuels such as diesel, jet fuel, and heating fuel. Our biocides kill both bacteria and fungi and eliminate the corrosion of tanks and delivery systems caused by the acidic by-products of microbial growth.

Reliable Delivery. Expert Support.

All Temple Engineering products are manufactured under strict quality control and delivered through our proven supply chain.


We don’t just deliver fuel additives—we deliver peace of mind.

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Consistent, high-performance chemistry in every batch


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Packaging options to match your facility’s needs


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Technical support from our railroad-experienced staff


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Safety data and product usage guidance on request

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Cleaner Fuel. Greener Railroads.

Temple Engineering’s fuel additives aren’t just effective—they’re engineered with environmental responsibility in mind. We prioritize:

Ashless, organic-based formulations
Reducing harmful emissions and soot
Enhancing fuel efficiency for lower carbon output
Meeting or exceeding EPA and ASTM standards

Our mission is to help railroads meet environmental targets without compromising power, uptime, or safety.

Have Specific Fuel Additive Needs? Let’s Talk.

Not every operation has the same fuel challenges. That's why our team offers custom-recommendations for your equipment, climate, and compliance requirements. From biocide blends to cold weather flow improvers, we can suggest fuel additive solutions tailored to your operational goals and regional conditions.

Fuel Additives: Frequently Asked Questions

  • Are Temple Engineering fuel additives compatible with biodiesel or ULSD?

    We specialize in chemical solutions for the railroad industry across North America and Europe. Our products are engineered specifically to meet the operational, environmental, and safety demands of locomotive systems and infrastructure.

  • What fuel problems can Temple Engineering products solve?

    Our fuel additives address a range of common issues including fuel gelling, injector fouling, microbial growth, low lubricity, and poor cold-weather performance. Each product targets specific rail-grade fuel challenges.

  • Do your additives meet EPA or ASTM standards?

    Yes. All Temple Engineering fuel additives are manufactured to meet or exceed applicable EPA regulations and relevant ASTM standards, helping railroads maintain compliance with minimal operational disruption.

  • How do I know which additive is right for my application?

    Our team will review your operational goals, climate factors, and fuel type to recommend the most effective solution. We also offer custom formulations when off-the-shelf products don’t fit.

  • Do you offer bulk delivery or recurring shipments?

    Yes. We can accommodate bulk orders, recurring supply agreements, and various packaging options to match your fueling infrastructure and storage capacity.

Ready to Power Up Your Fuel Performance?

Whether you’re battling winter weather, sludge buildup, or compliance headaches, Temple Engineering has a fuel additive to match. Our railroad-grade solutions are trusted nationwide to improve combustion, reduce emissions, and extend equipment life.