Just need the know how and weather to get using it.
I'm sure I have seen a"how to" somewhere, I'll have a search around and try and find it.
More or less though, the filter housing has a cap on it which need's removing, then this Drain Tool can be screwed into the bottom which will lift the valve, allowing the housing oil to be drained out. Then remove Drain Tool and efit cap.
I think
Still haven't got round to changing my oil with it yet