10 Best Diesel Oil Additives 2025 in the United States

The Lucas LUC10013 Fuel Treatment is a diesel oil additive that offers several beneficial features for diesel engine owners. One of its main strengths is its ability to clean and lubricate the fuel system, which can improve the performance of fuel injectors and the combustion chamber. This cleaning action helps remove deposits that can build up over time, leading to improved fuel efficiency and potentially better fuel economy. Users may appreciate its role in reducing harmful emissions as well, making it a good choice for those looking to lessen their environmental impact.

Moreover, the product is designed to enhance power and acceleration, as it promotes better fuel flow and can help the engine run more smoothly. For those using low sulfur fuels, the Lucas treatment also neutralizes associated problems, which is a handy feature.

While the product does provide corrosion protection, its effectiveness can vary based on the specific conditions of their engine and fuel quality. Additionally, the application requires a gallon's worth of product, which could be more than some casual users need, and it may take time to notice a significant change in performance. It's also important for users to follow the dosage instructions carefully to avoid any issues with over-treatment.

Hot Shot's Secret Everyday Diesel Treatment in a 16-ounce squeeze bottle is designed to cater to the needs of diesel engines by addressing key aspects like boosting cetane, improving lubricity, and preventing rust and corrosion. One of its standout features is the ability to boost cetane by up to 7 points, which can significantly enhance engine power, performance, and fuel economy. This is a major plus for anyone looking to get more efficiency and power out of their diesel engine.

Additionally, the treatment helps to stabilize fuel and disperse moisture, which is crucial in preventing issues related to water contamination in diesel fuel systems. The inclusion of lubricity enhancers and anti-gel agents is beneficial for ensuring smooth engine operation and preventing fuel from gelling in colder temperatures. Moreover, the product's anti-corrosion properties help in extending the lifespan of engine components by preventing rust and corrosion.

While it advertises increased fuel economy, individual results may vary depending on the engine condition and other factors. The product dimensions and weight make it portable and easy to use, but users should be aware that it's a consumable product that will need regular replacement. It seems to be a solid choice for diesel vehicle owners looking to maintain and enhance their engine performance.

The Archoil AR6500 Diesel Treatment is designed to enhance the performance and longevity of diesel engines. One of its primary strengths is its wide-ranging applicability, as it is suitable for all diesel vehicles. A single 40.6 oz bottle can treat up to 400 gallons, making it cost-effective for frequent use. This additive includes a blend of detergents, cetane boosters, lubricity enhancers, anti-gel agents, corrosion inhibitors, and stabilizers, addressing multiple key specs necessary for maintaining modern diesel engines.

The product is particularly notable for its ability to clean the post-combustion system, including components like the turbo and Diesel Particulate Filter (DPF), which can help prevent premature failures and reduce the frequency of regeneration cycles. On the downside, some users might find the initial cost high, but considering its effectiveness and the volume it treats, it could be a valuable investment for those looking to maintain their diesel engines over the long term. The product’s robust formulation also ensures that the fuel system, including high-pressure common rail (HPCR) systems, is cleaned, lubricated, and protected.

In summary, the Archoil AR6500 is a comprehensive diesel treatment that excels in enhancing engine performance, fuel economy, and system longevity, making it a worthwhile choice for diesel vehicle owners.