Yep, 30cm pipe leaked, ran a metre one right up fairly high behind the back bumper, total disaster, leaking all over the inner surface of the bumper and leaking through the joins in the plastic sections of the bumper to the outside, looks terrible !
Soo, I've come to the conclusion that simply extending the pipe with the same ball valve ain't going to work, can't really go much further than behind the rear bumper.
This assembly seems to have the capability of sending its oil far and wide, it's acting like a pump.
Think there's 3 options left inspired by suggestions from forum members --
1.Try without the original breather with its ball valve, its a one way valve after all, and it might be sealing very well and allowing the oil build up. I found a bit of plastic rod that fits the tube end perfectly so I'll drill a 1mm hole in a section of that and push it in the end in place of the breather.
2. Fit a small oil catch bottle, ebay has little aluminium casing fuel filters with 8mm connection stubs which look promising, can take them apart and remove the actual filter and just use the bottle as an in - line catch point.
3. Blank off the current breather position with an M10 bolt stub and washer and move attention to the other side of the box.
Can't remember the size of the filler plug but should be easy enough to make or buy a hollow threaded bolt to fit it as I did with the breather hole.
Its on a horizontal axis in the side of the casing, so not directly above the spinning gears. Also being at the diff end, it's closest to the slowest cog, not above the motor cog.
I think beyond all that..... I GIVE UP