My Mk2 Manual states this
1.2 8v + 1.2 16v + 1.9D + 1.9JTD
Front + Rear Hydralics = .40 litres
Abs Hydralics .45
1.8 16v States only Abs unit at .55Litres
So basically A litre should be enough Really, but a 2 litres would be better, as bleeding you'll waste loads, and you'll need to flush as well
Ziggy