I bought my Octavia Mk 2 with a 1.8 TSI engine early this year.
At that point it had done about 80000km.
I got it serviced right away and put in this oil ---> http://www.mister-auto.se/sv/motorolja/bolk-bol-d091020_g3224_a999BOL-D091020.html
During the next 10000km i've been forced to put in an additional 4,5-5liters of oil adding up to a consumption of just below 0,5liter/1000km in average.
However at the 90000km service i put this oil in http://www.mister-auto.se/sv/motorolja/shell-5500