Rear Diff fluid change questions

[Captain Kirk]

Here’s the noise I’m getting. Definitely sounds like rear end. StRts around 4 secs in. Sound up

Did you change your diff fluid yet? If you didn't, change it and see if the sound goes away...

 

[16plati]

Did you change your diff fluid yet? If you didn't, change it and see if the sound goes away...

Gonna be this weekend along with tearing apart my brakes bc they might be locked up too. Will report back