The TUNAP MF98300200A Diesel System Additive is a high-performance fuel additive designed to clean and protect diesel fuel systems. This 200ml additive effectively removes deposits from injectors and combustion chambers, ensuring optimal fuel atomization and combustion. It helps to restore engine performance, improve fuel economy, and reduce harmful emissions. Suitable for all diesel engines, including those with common rail and pump-injector systems, and compatible with diesel particulate filters (DPF). Regular use prevents new deposit formation and maintains the efficiency of the diesel system.