10 Best Diesel Fuel Additives 2025 in the United States

Hot Shot's Secret Everyday Diesel Treatment in a 16-ounce squeeze bottle offers several valuable benefits for diesel engine maintenance. This product is designed to boost the cetane number by up to 7 points, which can help improve combustion efficiency and result in better engine performance and fuel economy. The increase in power and performance is a notable strength, making it a suitable choice for those looking to get the most out of their diesel engines.

Additionally, it enhances lubricity, which is crucial for preventing wear and tear on engine components, and includes corrosion inhibitors to keep rust at bay, extending the lifespan of the engine and fuel system components. Another significant feature is its ability to stabilize fuel and disperse moisture, which helps prevent fuel degradation and the formation of harmful deposits, ensuring a cleaner and more efficient burning process.

This additive also functions as an anti-gel, making it suitable for use in colder climates where diesel fuel can thicken and clog the fuel system. It's worth noting that the boost in cetane and other benefits might not be as noticeable in all engines, and the cost might be a consideration for some users. It's also essential to follow the manufacturer's instructions for the best results. In summary, this product is highly effective for those wanting to maintain their diesel engines' health and efficiency, especially in varying temperatures and conditions.

Hot Shot's Secret LX4 Lubricity Extreme is designed to enhance the performance and longevity of both gasoline and diesel engines. One of its standout features is the significant increase in fuel lubricity, which can protect critical components like fuel pumps and injectors by up to 56%. This added protection is especially beneficial for users of Ultra Low Sulfur Diesel, as it restores lubricity that may be lacking in such fuels. The product also aims to extend the life of the fuel system, ensuring smoother operation by reducing friction and wear on engine parts, which can lead to better performance.

An appealing aspect of LX4 is its versatility; it can be safely used in all engine types, making it a suitable choice for a wide range of vehicles. Additionally, its ease of use—requiring just 1oz per every 10 gallons of fuel—adds convenience for users looking for a simple solution to maintain their engines.

Hot Shot's Secret LX4 Lubricity Extreme is a strong choice for those looking to protect and enhance their engine performance with a reputable product. Its strengths lie in its lubricity-enhancing properties, ease of use, and versatility, making it a solid option for both diesel and gasoline vehicle owners. Users should be aware of the need for consistent application to fully reap its benefits.

Hot Shot's Secret Diesel Extreme is a comprehensive diesel fuel additive designed to address multiple key needs essential for engine maintenance and performance. One of its prominent strengths is the ability to significantly boost cetane levels by up to 7 points, which can improve combustion efficiency, fuel economy, and engine power. Additionally, it excels in cleaning fuel injectors and the entire fuel system, which helps prevent and eliminate various deposits, ensuring smoother engine operation and longevity.

The product also enhances lubricity, which is crucial for protecting critical engine components like valves, pumps, and pistons, reducing wear and tear over time. The inclusion of military-grade rust and corrosion inhibitors helps to stabilize the fuel and prevent rust, further contributing to engine reliability. The non-alcohol-based formulation is effective in dispersing moisture, thus mitigating potential fuel system issues. Moreover, its easy-to-use application method, requiring just 8 oz. per 20 gallons of fuel every 6,000 miles, makes it convenient for regular maintenance.

However, the product does not specifically mention anti-gel properties, which might be a concern for users in extremely cold climates. Hot Shot's Secret Diesel Extreme is well-suited for diesel vehicle owners looking to improve engine performance and maintain fuel system cleanliness, though they might need to consider additional anti-gel solutions if operating in very cold environments.