Thanks. Is it possible to put a drop of synthetic bearing oil on the bearings to help bearing last longer.Sure there are bearings. But they should be good for the life of the aircraft. In the event one fails, it would be easier just to replace the entire motor. Think the motors are ~$25 USD.
If DJI wanted the motors lubed, it would be in the manual to do so.A little synthetic oil shouldnt harm it tho