Product description

Normfest Cooling System Cleaner is a professional cleaner for the entire cooling system of all water-cooled Volkswagen T25 models. After years of use, limescale, rust particles, sludge and oil residues can accumulate in the cooling system. These contaminants can reduce the flow of coolant, resulting in less efficient engine cooling and potentially affecting the performance of the interior heating system.

Normfest Cooling System Cleaner allows you to clean the entire cooling system before adding fresh coolant. The cleaner helps loosen and flush away deposits from the radiator, engine block, heater matrix and coolant pipes. This can improve coolant circulation and help the cooling system operate more efficiently again.

This cleaner is suitable for all water-cooled Volkswagen T25 engines, including both Waterboxer and diesel engines. The product is ideal when replacing the coolant or carrying out cooling system maintenance, such as replacing the radiator, water pump, thermostat, coolant hoses or other components. It also helps remove remaining contamination following a failed cylinder head gasket or oil cooler that has allowed oil to enter the cooling system.

The formula contains no aggressive acids or alkalis, is suitable for the metals commonly used in cooling systems and is also safe for rubber and plastic. This allows the cleaner to be used throughout the entire cooling system of the Volkswagen T25.

How much do you need?
One bottle contains 250 ml and, according to the manufacturer, is sufficient for cooling systems with a capacity of up to 10 litres. The cooling system of a Volkswagen T25 holds approximately 17.5 litres in water-cooled petrol models and 16 litres in diesel models. For a complete cleaning treatment, we therefore recommend using two bottles, ensuring that there is sufficient cleaner for the entire cooling system capacity.

Instructions for use
First allow the engine to cool down completely, then drain the old coolant. Fill the cooling system with clean water and add the Normfest Cooling System Cleaner. Set the interior heating to maximum heat so that the cleaner can also circulate through the heater matrix.

Then run the engine at operating temperature for approximately 30 minutes, allowing the thermostat to open and the cleaner to circulate throughout the entire cooling system. Afterwards, drain the contaminated liquid and thoroughly flush the cooling system with clean water. In cases of heavy contamination, it may be necessary to repeat the treatment.

Finally, fill the system with the specified coolant, which you can find under the Options tab. Bleed the cooling system according to the factory instructions and check the system for leaks.