10 Best Diesel Engine Cleaner 2025 in the United States

The Archoil AR6400-D Diesel Fuel System Cleaner is a powerful solution designed to rapidly clean essential components in diesel engines, including injectors, turbos, blocked DPFs, and dirty EGR systems. Its strong cleaning power helps restore engine performance, improve fuel economy, and ensure smoother idling. A significant advantage is its compatibility with all diesel systems, making it a versatile choice for various diesel vehicles.

The product's instructions recommend using one 12-ounce bottle to treat 40 gallons of diesel every 5,000 miles, highlighting its ease of use and convenience for regular maintenance. For those with Power Stroke engines, pairing it with the Archoil AR9100 Friction Modifier can address specific injector stiction issues and further enhance fuel system performance.

The Archoil AR6400-D offers robust cleaning capabilities, broad compatibility, and ease of use, making it well-suited for diesel vehicle owners looking to maintain their engine's performance and efficiency.

Hot Shot's Secret Diesel Extreme Clean and Boost is a potent diesel-engine cleaner that tackles the entire fuel system, including injectors, valves, pumps, and cylinders. With its ability to remove internal and external injector deposits, it is designed to keep engines running smoothly and efficiently.

The product also boosts cetane levels, improving fuel economy and increasing engine power, making it a good choice for those looking to enhance engine performance. Additionally, it contains rust and corrosion inhibitors, which further protect the engine components and disperse moisture effectively, addressing common diesel engine issues without using alcohol-based dispersants.

This cleaner is user-friendly, requiring a simple application of 8 ounces for every 20 gallons of fuel, making it convenient to use during regular fill-ups or every 6,000 miles.

Lucas Oil 10873 Diesel Deep Clean is a diesel engine cleaner designed to enhance the performance and longevity of your vehicle by reducing particulate matter by up to 32%, thus lowering DPF (Diesel Particulate Filter) maintenance costs and effort. It effectively removes harmful exhaust deposits that can clog the particulate filter, promoting better fuel injector performance and improving regeneration efficiency for a cleaner engine.

This product is suitable for regular use to maximize performance and fuel efficiency (MPG), making it a versatile choice for diesel vehicles, especially cars. With a high customer rating of 4.7 out of 5 stars based on 205 reviews, it is a well-regarded option in the automotive industry.

The Lucas Oil 10873 Diesel Deep Clean stands out for its effective cleaning power and compatibility with diesel engines, making it a strong candidate for those looking to maintain their vehicle's engine health.