10 Best Diesel Fuel Injector Cleaners 2025 in the United States

Hot Shot's Secret Everyday Diesel Treatment is designed to improve diesel engine performance and maintain engine health. This product features 6-in-1 functionality, acting as an injector cleaner and fuel system cleaner while boosting cetane levels by up to 7 points. This can lead to better fuel economy and reduced maintenance costs.

One of the standout features is its ability to clean both internal and external injector deposits, enhancing the lubricity of fuel to protect components like the pump and injectors, potentially increasing engine longevity. Additionally, it helps prevent rust and corrosion by demulsifying moisture and adding stability to the fuel.

The ease of use is a major advantage, as you simply add 1 oz. or 2 oz. per 25 gallons of diesel at every fill-up, making it convenient for regular use. However, users need to be diligent about adding it at each fill-up to see the best results. This product is especially suited for those looking to maintain their diesel engines regularly and not minding the routine of adding the treatment during each refuel.

Hot Shot's Secret Diesel Extreme offers a robust cleaning solution for diesel engines, designed to target and eliminate deposits in fuel injectors, which can significantly boost engine performance and fuel economy. One of its standout features is its ability to clean the entire fuel system, including valves, pumps, and pistons, providing a comprehensive approach to engine maintenance.

The inclusion of cetane boosters promises more efficient combustion and improved power, which is particularly beneficial for those seeking to enhance fuel mileage and performance. Additionally, it contains military-grade rust and corrosion inhibitors, making it a reliable choice for long-term engine protection. Ease of use is another strong point; simply add 8 ounces to 20 gallons of fuel every 6,000 miles, allowing for straightforward application without frequent intervention.

The concentrated formula ensures that even this infrequent application is effective. One consideration is that its relatively higher price point and the larger 1-gallon size may not be suitable for all users, especially those with smaller engines or less frequent use. Its unscented nature is a plus for those sensitive to strong chemical smells. This product is ideal for diesel vehicle owners who prioritize detailed engine care and are looking for a powerful cleaning agent to maintain and enhance engine longevity and efficiency.

The Archoil AR6400-D Diesel Fuel System Cleaner is designed to offer a comprehensive cleaning solution for various components of diesel engines, including injectors, turbos, DPFs, and EGR systems. One of its main strengths is its powerful cleaning ability which helps in restoring engine performance and fuel economy, as well as providing smoother idling. The product's compatibility with all diesel systems makes it a versatile choice for a wide range of diesel vehicles.

Power Stroke users might find additional benefits when used in conjunction with Archoil AR9100 for solving injector stiction issues. The product is conveniently packaged in a 12 oz bottle, which is sufficient to treat 40 gallons of diesel fuel, and it's recommended to use every 5,000 miles, making it relatively low-maintenance in terms of frequency of use. However, some users might find the need for a separate product like AR9100 for specific issues slightly inconvenient. Also, at 12 oz per treatment, it might not be the most cost-effective option for those with larger fuel tanks or higher fuel consumption.

Despite these minor drawbacks, the Archoil AR6400-D remains a strong contender in the diesel fuel injector cleaner market, particularly for those looking for a reliable and effective cleaning solution.