Hello Leuz! I have only been owner of a motorcycle for a few weeks (Yamaha XJ600 BJ.12/96) and try to bring the old car back to the front. I really have some problems and also a question about the engine oil! I bought Castrol Power1 -10W40T now, but one of my old motorcycle buddies said I had to be very careful here, because this oil would be synthetic or at least partial synthetic and the engine can’t handle it that way. It could cause problems with the K I’m glad that I haven’t made the oil change today, but I would like to try the swarm intelligence, which I hope can tell me if it’s okay to tip this oil into my engine or if I have to take something else. Of course I tried the search function, also found some entries, but unfortunately not the answer to my special question! I’m very grateful here for every tip!