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.

The Sea Foam SF128 Motor Treatment, 1 Gallon, is a versatile diesel additive that offers several benefits for maintaining and improving engine performance. One of its primary strengths is its ability to dissolve and clean fuel deposits and sticky residues from critical engine components like injectors, carburetors, and combustion chambers. This ensures a smoother and more efficient running engine. Additionally, Sea Foam excels in stabilizing stored fuel for up to two years, which is particularly useful for those who store vehicles or equipment for extended periods.

The prevention of gum and varnish formation helps maintain fuel quality over time. Furthermore, Sea Foam provides high-temp upper cylinder lubricity, protecting the fuel system from dry out, wear, and corrosion. This added lubricity can be crucial for prolonging engine life and maintaining performance. Another notable advantage is that Sea Foam contains only petroleum-based ingredients, avoiding harsh detergents or abrasive chemicals that could potentially harm the engine. This makes it a safer choice for regular use.

For general cleaning, stabilization, and lubricity improvement, Sea Foam SF128 is a reliable and safe choice.