Ravenol TSI 10W-40 is a high additive treated engine oil that allows an energy-saving operation because of its activation, choice of base oils, and viscosity adjustment. In order to guarantee the low viscosity of the SAE class 10W, as well as a low evaporation loss, is produced on the basis of hydro crack oils and polyalphaolefins (PAO) which correspond to the high-tech demands. Itcontains less than 30 % polyalphaolefins (PAO).