rear differential

Hi all, posting here because I've exhausted most of my options and will be taking it to another shop to check my wires and battery. To sum it all up: I recently installed some JRZ rs pros with rsr edc cancelers (both used) and went back on the track. During the last 2 sessions, I ended up...

2020 3.0 Supra has 34K miles never changed the diff fluid before and do pulls pretty often. Just thought id share how dirty it was