Hello Kawagemeinde, spring comes a bit closer day after day and thus also the motorcycle season again. I would like to miss my ninja before the first exit new engine oil and accordingly a new oil filter. I made a little bit of a smart about the SuFu and would like to buy me a 20W40 or 20W50 oil, mineral. My driving style: I drive exclusively at warm temperatures and then at least an hour unentered. So hardly a short distance. I am never on the race I can’t tell you what kind of oil I currently have in it. My Ninja has about 32,000 km on the speedometer and currently consumes 0.5 – 1 liter of oil at about 6,000 km. What would you recommend to me in concrete terms? A 20W40 oil or more than 20W50. I think mineral is best (because of the clutch). Is that correct? I would like to change oil for the future before every new motorcycle season. e Driving performance per season: 4000-7000 km. Can you recommend me a specific oil supplier, for example Castrol, Shell etc.? My last question: Where do you buy your motorcycle oil? I hope I can find confirmation here regarding my oil choice (20W40 or 20W50) and perhaps one or other specific tip for the oil brand. MfG Mathias