Wynns CV DPF Regen & NOx Sensor Protector is designed for all diesel engines to easily clean and regenerate blocked diesel soot filters without dismantling. It acts as a catalyst for optimized combustion of soot particles and cleans NOx sensors to prevent AdBlue contamination. This protector reduces soot combustion temperature, allowing soot to burn off faster at lower temperatures, thus restoring engine performance and preventing NOx sensor contamination. It assists passive DPF regeneration and is suitable for all diesel engines.