1 week ago I  took a 200 km trail and, on the way back, suddenly, my Zforce)1000 2021  458 km on bike started to make a noise.  Went put on 4x4 and  start smell oil like 80/90 diff oil When 4x4 off noise stop  Went see dealer find nothing and  told that sound normal   no oil leak .Start make  that noise around 400km on my bike Use 4x4 few time because we have snow down my place grooming trail winter