mazza 2.2 said:
Ive been told Semi Synth 10W /40 for all vx engines up untill 2005/6 where they are all fully synthethic. 🙂
not 100% true,all vectra c and signums used fully synthetic long life oil,all agila,corsa c and meriva models used fully synthetic oil from 2004 model year,all astra g models and zafira a models used 10w40 semi synthetic,all astra h models used fully synthetic which came out on mid 2004