Was hoping to change the diff oil this weekend, I've located what I assume to be the filler plug on the right hand side of the diff, looks to be quite a big size, can someone tell me what size spanner I need?
Can't help with the spanner size I'm afraid as I use a good slim adjustable for that job as it fits up the side nicely, but can confirm that's the filler... Usually has an embossed info tag around it