STP Ultra Diesel Cleaner is a premium formula designed to deeply clean and protect your diesel fuel system. It removes stubborn deposits from fuel injectors, intake valves, and combustion chambers, restoring lost power and improving fuel efficiency.

Regular use helps prevent injector clogging, reduces harmful emissions, and enhances fuel combustion for smoother engine performance. It also contains anti-corrosion agents that protect fuel system components, extending engine life and maintaining optimal operation.

Safe for all diesel engines, including turbocharged and high-mileage vehicles, this easy-to-use treatment works in just one application. Simply pour into your fuel tank to experience a cleaner, more efficient, and powerful engine.