It's rather odd.
It's not like normal HG mayo.
It's a different consistency and colour.
And as far as I can see it's only in the PCV system.
So my theory is that there's a damaged hose somewhere that's allowing water in to the blow-by hoses
(I don't have the normal rain tray in my engine lid).
Unfortunately the point at which the PCV and ICV connect to the intake piping is right next to each other so I think the ICV has sucked a load of this poo in and is causing my idling problem.
I don't really tend to do many short trips in my car but sometimes I have to for work.
Either way I haven't got time to fix it so it's at Luke's place.
.
.
Hopefully I'll know soon whether I can go to France or not!