NEVER EVER oil your drone motors ,when starting out several years ago (THE OG MAVIC 1) I added one drop of 3 in 1 oil to each motor ,it flew ok for about a year ,but on a RTH I noticed smoke coming from one of the motors ,took it home put the...
@jwilson I think you're making a huge mistake to fly over water, especially the ocean, with a suspicious battery. It could completely fail at any moment.