For efficient and fast cooling and heating system cleaning. It dissolves and combines oil- and fat-contained sediments. It degrades and eliminates sludge and corrosive deposits. Properties: • it cleans cooling and heating systems; • it dissolves and combines oil- and fat-contained sediments; • it neutralizes lime deposits; • it degrades and eliminates sludge and corrosive deposits; • it protects a new coolant from old contaminants. Application: • for better cooling system performance; • when changing coolants; • for elimination of lime deposits in the radiator system. Application: Drain the dirty coolant before cleaning and add fresh water. Add TUNAP 343 cooling system cleaner. Warm up the engine to the operating temperature and let it run within minimum 30 minutes. Drain the dirty mixture of water/cleaner. Repeat if it is necessary. Then flush the cooling loop with clean water. After cleaning, flood the cooling system again, ventilate and check for tightness.