I got just under 2 litres out (1.9ish), assumed the rest was on the sides of the bowl (but probably only 50ml though, so it must have been a bit low, no obvious evidence of leaks though). 2 went back in and it didn't overflow, so I was thinking of topping it up with a gearbox additive.
The Cooper CS2's are a bit 'light'
, very easy to get them squealing. I wouldn't put them on a T4 but they are predictable, they give pretty good feedback so you know when to back off. They are the quietest tyres I've fitted (for motorway use) and the pair cost me £35 fitted so I couldn't really say no!
And yes, Tim deserves full credit for the filler invention, couldn't have done the job without it. Are you now taking orders?