Hi mate,
Just ask the service manager if any engine and dsg upgrades are available as its slightly down on power and smoothness on gear changes,since i bought car.
Mine went in for new recaro leather and i mentioned 2nd to 3rd dsg up and down was slow,upgrade sorted it,so i was happy,although i think they will auto do/check for you.
Also,imo,i would think vw would put new 504 oil in,as they dont want any comebackes after service.
I have faith in the service side of my vw,although the service co-ordinator as he calls himself,imo,the prick who books the cars in,is a waste of space and would love to imprint my gti badge on his napper after launch control !!!!
Take it in and dont worry.
Chris.