I have a leak from my rear diff, and as it's from the front I assume it's the prop shaft seal that's gone.
As there's no oil spots on the drive, I assume it isn't leaking horribly, but before I drive it any distance I want to check the oil level and top-up if necessary.
Having crawled underneath, there isn't a lot of room in about the plug and I don't have a tool to fit the square recess in the plug.
Does anyone happen to know what tool I need to get it undone? Is it 3/8" drive (I know it's bigger than 1/4" and smalled than 1/2"!)