Rejuvenates dried out, porous, shrunken oil and valve stem seals. One 300 ml can of Motor Oil Saver is sufficient up to 5 liters (5.28 U.S. QT) of motor oil. The product can be added at any time. After adding, run the engine until warm. Sealing first takes effect after about 600-800 km (400-500 miles). To guarantee a lasting effect, add Motor Oil Saver every approx. 30.000 km (20.000 miles). Minimum oil filling of 3 liters (3.17 U.S. QT) is requested for optimum product performance.