The oil distribution in the crankcase is an extremely challenging simulation topic. This is mainly due to the complexity of the geometry and the multi-body dynamics of the crank drive. Under certain driving conditions, the oil behavior in the oil sump leads to problems in supplying the oil pump. This can even lead to severe engine damage as a result of a lack of supply to the oil system. With the help of the SPH simulation tool PreonLab engineers can now simulate the oil distribution in the crankcase like never before.