10 Best Diesel Cleaner 2025 in the United States

Hot Shot's Secret Everyday Diesel Treatment (EDT) is designed as a comprehensive diesel additive. This 6-in-1 diesel cleaner stands out with its promise to improve engine performance and maintain engine health. A key strength is its ability to boost fuel economy by increasing cetane levels by up to 7 points, which can lead to better fuel efficiency and reduced maintenance costs.

The product excels in cleaning both internal and external injector deposits and enhancing the lubricity of the fuel, safeguarding fuel system components like pumps and injectors, potentially increasing engine longevity. Additionally, it prevents rust and corrosion, which is essential for maintaining the health of fuel systems. The ease of use is another plus—just add 1 or 2 ounces per 25 gallons of diesel at every fill-up, making it convenient for regular use.

The product is engineered with a strong scientific foundation, ensuring reliability and effectiveness. However, a potential drawback could be the necessity of using it at every fill-up, which may feel cumbersome for some users. If you’re looking for a reliable diesel cleaner that boosts performance, protects your fuel system, and is easy to use, Hot Shot's Secret EDT is a strong option to consider.

Hot Shot's Secret Diesel Extreme Clean and Boost is a versatile diesel cleaner designed to tackle multiple issues within the fuel system. It effectively cleans out the tank, fuel lines, and injectors, which can improve engine performance and fuel efficiency. Additionally, it removes free water from the system, helping to prevent corrosion and other water-related issues.

The product also stabilizes fuel and boosts cetane, which can enhance combustion and reduce emissions. Furthermore, it lubricates the fuel pump and injectors, potentially extending their lifespan and reducing maintenance needs. These comprehensive benefits make it suitable for various diesel engines, making it a versatile choice for many users.

While the concentration and dosage instructions need to be followed precisely to avoid any potential overuse or misuse, the product is user-friendly. With a brand reputation backed by positive customer reviews, it appears to be a reliable option. The additional benefits, like fuel stabilization and cetane boosting, provide extra value beyond just cleaning. Despite being on the heavier side, weighing nearly 4 pounds, and being in a sizeable 64 fl. oz. container, its efficacy and multi-functional nature make it a strong contender in the diesel cleaner category.

The Power Service Diesel Kleen + Cetane Boost is a diesel cleaner that offers several benefits, especially for those looking to improve their diesel engine's performance. One of its main strengths is its ability to clean dirty injectors and prevent injector sticking in both modern High Pressure Common Rail (HPCR) systems and older diesel systems. This can lead to a more efficient engine operation and less maintenance over time. Another notable feature is its cetane boosting capability, which can boost cetane numbers up to 6 points. This translates to engines running smoother, with quicker cold starts and less power lag, enhancing driving experience.

It's also versatile in its compatibility, as it works with all types of diesel fuels, including Ultra-Low Sulfur Diesel (ULSD), biodiesel, and biodiesel blends. Additionally, its universal fit ensures it can be used with all diesel vehicles, making it a convenient option for various users. The product is easy to use and comes in a convenient 64oz bottle, with a six-pack providing ample supply for multiple treatments. Power Service, the manufacturer, has a good reputation for producing quality fuel additives, which adds to the product's credibility.

On the downside, users need to handle it with care due to its flash point of 49 degrees Celsius, implying it can be flammable. Moreover, while it offers significant benefits, its effectiveness might vary depending on the condition of the engine and the type of fuel used. This diesel cleaner is well-suited for diesel vehicle owners looking to enhance engine performance and longevity.