The Motul Radiator Clean is a specially formulated coolant-system cleaner designed for use in both gasoline and diesel vehicles. It's added to the coolant during a routine flush to dissolve and remove built-up scale, corrosion, rust, and sludge that accumulate over time. This helps clear radiator passages, heater cores, thermostat housing, and cooling channels, ensuring efficient coolant flow and proper heat transfer.

By restoring clean cooling pathways, this cleaner helps lower engine-operating temperatures, improves heating system performance, and prolongs the lifespan of vital cooling components like water pumps and thermostats. It's ideal for periodic maintenance, resolving overheating issues, or as a preventative step before adding new coolant. Its easy one-step application makes it a smart choice for maintaining optimal engine thermal regulation and system reliability.