Contents sufficient for max. 5 liters (5.28 U.S. QT) of motor oil, minimum filling of 3 liters (3.17 U.S QT) is requested for optimum product performance. The product is self mixing and can be added at any time, sealing first takes effect after about 600-800 km (400-500 miles). The use of Motor Oil Saver every around 30.000 Km (20.000 miles) is recommended to guarantee a lasting effect.