Hello, I’m going to make an oil change the days. Finally, there was an oil change before my conversion measures still by the seller In my documents received from him it says that he used CastrolPower 10 W 50. Should I use the same or change it? What would be “most meaningful” ? If it matters: During the week I only drive to work and back (only 10 km) , but on weekends then of course considerably more and longer. Thanks in advance for your e Efforts.