Moin to everyone together. It’s time to go back to ko……en. Got my fat guy for 6 months now and there’s always something new. Now I have noise from the rear axle. Tap the differential at the moment. So……for the first time, make an oil change at the differential and see if something changes. Apparently, you can’t just have the things checked out. Would be grateful if someone could tell me what kind of oil has to go in and if necessary the crowd.