[infinite_creations25]

I replaced my differential last summer and that nut was indeed an absolute pain to get off. The factory loctite will fight you the entire way until the nut is completely off. As you turn the nut, the driveshaft will begin pushing back towards the front of the car and the nut will remain on the diff. As for the black ring, It’s a retaining clip for the nut and not an oil seal. The new nut will come with a new one so doesn’t matter if you damage it. It simply pops off with a screwdriver.