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 Marine Diesel Fuel Additives and Boat Fuel Stabilizers

We offer a powerful line of marine diesel fuel additives and boat fuel stabilizers engineered for watercraft, including commercial vessels, recreational boats, and ships. Each product is formulated to protect marine fuel systems, extend engine life, and improve performance in harsh marine environments. Whether you’re storing fuel for the off-season or preparing for long trips at sea, our marine fuel additives support fuel efficiency, combustion stability, and long-term protection.

Improve Combustion and Engine Longevity at Sea

Marine engines demand efficiency and resilience. Our Fuel Ox Marine® with Combustion Catalyst formula delivers both. This proprietary additive boosts combustion efficiency, which helps reduce emissions, fuel consumption, and engine maintenance. It disperses and removes internal fuel deposits and stabilizes fuel, making it ideal for marine diesel engines prone to soot and sludge buildup. Key benefits include:

  • Improves combustion for more power and better fuel economy
  • Reduces harmful emissions and wear on components
  • Stabilizes fuel and protects injectors and pumps from carbon buildup

This formula is fully soluble in all types of middle distillate and heavy marine fuel oils and works seamlessly in both inland and open-water vessels.

Eliminate Asphaltene Buildup in Marine Fuel Systems

For boat owners and marine operators dealing with dirty or unstable diesel, Fuel Ox® Asphaltene provides an advanced solution. It breaks down asphaltenes, heavy molecular clusters in degraded diesel, before they clog fuel filters or damage injectors. It’s also an ideal additive for fuel in long-term storage.

  • Stabilizes marine diesel fuel for up to 2 years
  • Removes sludge, carbon, and water contamination
  • Reduces emissions and improves fuel efficiency by 5–10%

Our Fuel Ox® Asphaltene formula helps you maintain consistent performance in harsh saltwater environments while reducing maintenance costs and downtime.

Protect Stored Fuel with Our Boat Fuel Stabilizer

End-of-season storage introduces risks of fuel degradation, moisture buildup, and corrosion. Fuel Ox Marine® Winter Shock is a specialized boat fuel stabilizer formulated to keep fuel fresh for up to two years. It prevents gumming, varnish, and oxidation, ensuring your boat starts reliably after storage. Use it before winter layups or anytime your vessel will remain idle for extended periods. It helps preserve the integrity of the fuel and protects the entire fuel system.

Cold Weather Protection for Marine Fuel

Cold weather introduces serious challenges for marine diesel fuel. Fuel Ox provides several targeted treatments to prevent fuel system failures due to freezing temperatures:

  • Fuel Ox® Cold Charge improves cold pour point and keeps fuel flowing during colder conditions.
  • Fuel Ox® Freeze Guard is a military-grade anti-gel that lowers the cold filter plugging point and removes water.
  • Fuel Ox® Winter Max is ideal for sub-zero climates, preventing wax and ice formation in filters and fuel lines.
  • Fuel Ox® Heat Bomb is an emergency fuel system de-icer that can restore gelled or frozen fuel fast.

These cold-weather additives ensure optimal performance, even in frigid marine environments. They’re all fully soluble in marine diesel and compatible with common marine fuel systems.

Marine Greases for Deck Equipment and Engines

Marine environments demand grease products that resist water, high pressure, and salt. Our Infinity Lube™ line includes several options engineered for marine-grade performance:

These advanced lubricants help reduce friction and wear on critical marine systems, extending equipment life and enhancing reliability.

Sustainable Performance Backed by Science

Since 2014, Fuel Ox has been committed to helping customers improve performance and protect their fuel system. With a patented product line that reduces emissions, extends engine life, and prevents common fuel system failures, Fuel Ox leads the way in sustainable marine solutions. Every product is engineered with cutting-edge chemistry and tested for compatibility with marine diesel fuels.