does anyone know the size of the rear diff drain and fill plug? i was fighting with it last night and lost.
finally this morning i gotta 15/16" on it and got it off but its all rounded and messed up so im thinking about replacing it. im thinkin maybe my diff breather is plugged up cuz it was so ridiculously tight maybe there was a bit of a vacuum? does that make sense?
In the future, try hitting it with a small wire brush to take of any surface corrosion and then some PB blaster. You can also tap it with a hammer to help break corrosion. You'll likely need at least a breaker bar, if not a cheater bar, too. A six-point socket is also a good idea to avoid slipping and rounding.