Top Fuel Injector Cleaner Brands for Optimal Engine Performance

Navigating the world of fuel injector cleaners can be overwhelming with the myriad of choices available today. As engines become more sophisticated, maintaining optimal performance through quality cleaning solutions is essential. The top brands in the market have consistently been recognized for their efficacy in improving fuel economy and engine smoothness. To explore the leading names that can take your engine maintenance routine to the next level, see the detailed list below.

Illustration of fuel injector cleaner

Best brands of fuel injector cleaner in 2025

Chevron Techron

Chevron Techron is a renowned brand celebrating 40 years of innovation and industry dominance in fuel additives, offering a wide range of products for various engine types, including cars, trucks, motorcycles, and diesel vehicles. Known for its powerful detergents, Techron effectively cleans fuel injectors, intake valves, and combustion chambers, optimizing engine performance, minimizing emissions, and restoring lost power. It has been recognized with several awards, including the Autoweek Readers' Choice Award for Best Fuel Additive in 2019. Techron's unique formulation is up to 10 times stronger than Chevron fuels with Techron, providing a quicker cleanup of deposits. Its products are scientifically formulated and backed by rigorous testing and development by industry-leading scientists. For more information, visit the Techron FAQs page.

Lucas Oil

Lucas Oil is a renowned brand in the fuel injector cleaner market, known for its effective products that enhance engine performance and fuel efficiency. The company's fuel injector cleaners have been tested and proven to improve mileage, with some users reporting gains of up to 14 miles per tank. Lucas Oil's products are widely used in the automotive industry, which accounts for more than two-thirds of the total demand for fuel injector cleaners. The brand's strategic partnerships, such as with California Superbike School, further solidify its market presence. With a growing market projected to reach $2.4 billion by 2033, Lucas Oil remains a key player in the fuel system cleaner sector.

Sea Foam

Sea Foam is a highly regarded brand for fuel injector cleaners, known for its effective and easy-to-use products. The Sea Foam IC5 Fuel Injector Cleaner, for instance, is specially formulated to clean fuel injectors and restore their spray patterns, improving engine performance and fuel economy. It is safe for all gasoline fuel-injected engines and recommended to be used every 3,000 miles for routine maintenance. The product is designed to be added directly to the fuel tank, particularly when the tank is low to maximize cleaning concentration. Sea Foam's treatments also help in reducing NOx emissions and cleaning the upper engine areas.

Royal Purple Max-Clean

Royal Purple Max-Clean is a state-of-the-art synthetic fuel system cleaner that deeply penetrates and cleans injectors, carburetors, intake valves, and combustion chambers, restoring fuel economy by an average of 3.2% and horsepower by 2.6%. It reduces hydrocarbon, NOx, and CO emissions by 12%, 13%, and 18% respectively, and prevents rough idle, hesitation, and stalling. Max-Clean also stabilizes fuel during the off-season and storage, acting as a superior corrosion and oxidation inhibitor. Recommended for use every 10,000 miles, it is EPA/CARB compliant and safe for all ethanol blends and biofuels. Multiple fleet tests have confirmed its effectiveness in improving engine performance and fuel economy.

Red Line SI-1

Red Line SI-1 is renowned as one of the most effective fuel injector cleaners, capable of restoring injector efficiency to nearly 100% in a single treatment and potentially increasing fuel economy by up to 12%. It contains powerful high-temperature detergents and a synthetic upper cylinder lubricant, helping to clean pollution control valves and reduce octane requirements. The product is safe for continuous use and can treat up to 100 gallons of fuel. Users have reported significant improvements in fuel injector cleanliness and vehicle performance, even with reduced treatment rates. Learn more about the Red Line SI-1 fuel system cleaner.

Gumout Regane

Gumout Regane is renowned as one of the best producers of fuel injector cleaners, particularly with its Complete Fuel System Cleaner, which utilizes polyetheramine (PEA) to effectively remove carbon deposits and corrosion caused by ethanol and water. This product maximizes fuel economy, improves horsepower, and cleans the entire fuel system, including GDI/direct and port/indirect fuel injectors, intake valves, and combustion chambers. It is safe for use in turbocharged and supercharged vehicles and does not void OEM/manufacturer's warranties. Recommended usage is every 3,000 miles for optimal performance. This cleaner is highly effective in maintaining engine health and performance.

STP Fuel Injector Cleaner

STP Fuel Injector Cleaner is renowned as one of the best producers of fuel injector cleaners, offering products that effectively unclog dirty fuel injectors, restore lost power and acceleration, and improve engine performance. The STP Super Concentrated Fuel Injector Cleaner, for instance, treats up to 21 gallons of gasoline with a 5.25 fl. oz. bottle and is recommended for use every oil change or 4,000 miles. This product is safe for any gasoline engines, including those with cap-less gas systems, and is compatible with modern engine types such as turbo and direct inject engines. User reviews highlight its effectiveness in restoring engine performance, saving gas, and lowering emissions. The global fuel injector cleaner market, which includes STP products, is forecasted to grow at a CAGR of 3.8% from 2023 to 2033.

BG 44K

BG 44K is renowned as one of the best fuel system cleaners, formulated to safely and rapidly clean the entire fuel system, including fuel injectors, intake valves, ports, fuel filters, and combustion chambers. It contains a high level of Polyether Amine (PEA), a chemical recognized by major engine manufacturers for its effectiveness in removing hard-baked carbon deposits. This cleaner reduces problems caused by deposit buildup, such as engine surge, stalling, stumble, hesitation, and power loss, and can improve combustion performance by up to 70% in some cases. It is compatible with all fuel system materials, alcohol-blended fuels, and common fuel additives, and is safe for catalytic converters and oxygen sensors. Recommended usage includes adding 11 oz (325 mL) to treat up to 20 gallons (75 Liters) of fuel.

Liqui Moly

Liqui Moly is a prominent manufacturer of fuel injector cleaners, known for its high-quality products that effectively remove carbon deposits and other residues from fuel injectors, enhancing engine performance and fuel efficiency. The company's fuel system cleaners are part of a broader range of automotive chemicals, and their partnership with entities like California Superbike School in 2021 highlights their commitment to the market. Liqui Moly's products are favored for their efficiency and are part of the growing fuel injector cleaner market, which is expected to reach US$ 2.4 billion by 2033, growing at a 3.8% CAGR. The automotive industry, which accounts for more than two-thirds of the demand for fuel injector cleaners, significantly drives the demand for Liqui Moly's products. With a global presence and production facilities in cost-effective regions like Asia Pacific, Liqui Moly continues to be a key player in the market.

Motorcraft PM6

Motorcraft PM6 is highly regarded as one of the best fuel injector cleaners, known for its effectiveness in maintaining and restoring fuel system performance. It is manufactured by Ford Motor Company and has been recommended for use since its introduction, with a safety data sheet (SDS) detailing its composition and safe handling procedures. The product contains components like kerosine and naphthalene, which are effective in cleaning fuel injectors, and it has a flash point of 158.0 degF (70.0 degC). Users appreciate its ability to prevent and clear carbon buildup, especially in engines prone to such issues. The PM6 fuel injector cleaner is stable and non-reactive under normal conditions of use, storage, and transport.