10 Best Diesel Additives 2025 in the United States

Archoil AR6500 Diesel Treatment is a versatile additive suitable for all diesel vehicles. A 40.6 oz bottle can treat up to 400 gallons of fuel, making it a cost-effective option for frequent use. One of its primary strengths is its ability to clean the post-combustion system, including turbos and DPFs, which can prevent premature failures and reduce the frequency of regenerations. This feature is particularly beneficial for maintaining the longevity and efficiency of diesel engines.

Additionally, it incorporates a strong cetane booster, which can improve power and responsiveness, giving your vehicle a noticeable performance boost. The additive also excels in cleaning, lubricating, and protecting the entire fuel system, including high-pressure common rail (HPCR) systems, which are prone to deposits and wear.

Archoil AR6500 is a robust choice for those looking to enhance engine performance and protect their fuel systems, especially for users prioritizing power, response, and post-combustion cleaning.

Hot Shot's Secret Everyday Diesel Treatment in a 16-ounce squeeze bottle offers several strong features that cater to diesel engine needs. It effectively boosts cetane by up to 7 points, which can enhance power, performance, and fuel economy. This is a significant advantage for those looking to improve their diesel engine's efficiency and performance.

The product also stabilizes fuel and disperses moisture, which helps prevent issues related to fuel degradation and water contamination, ensuring smoother engine operation. Additionally, it increases lubricity, which reduces wear and tear on engine components and prevents rust and corrosion, extending the engine's life.

Hot Shot's Secret Everyday Diesel Treatment is particularly beneficial for those seeking improved engine performance, fuel stabilization, and protection against rust and corrosion.

Hot Shot's Secret Diesel Extreme is a diesel additive designed to enhance engine performance and longevity. One of its main strengths is its comprehensive cleaning capabilities, targeting various components like fuel injectors, valves, and cylinders to remove deposits and prevent further buildup. This leads to a smoother engine operation and better fuel efficiency. Another notable feature is its cetane boosting ability, increasing cetane levels by up to 7 points, which can improve combustion, fuel economy, and engine power.

The product also acts as a water dispersant and includes rust and corrosion inhibitors, making it a good choice for preventing rust and improving engine performance. This additive is easy to use, requiring just 8 oz. for every 20 gallons of fuel, making it convenient for regular maintenance. However, one potential downside is that the product is designed for automotive use, which may limit its application in other diesel-powered equipment. Additionally, while it offers multiple benefits, it might be more costly compared to simpler, single-purpose additives.

In summary, Hot Shot's Secret Diesel Extreme is a robust option for those looking to maintain and enhance their diesel engine’s performance, particularly through its cleaning, cetane boosting, and anti-rust features.