Opel 2015 Astra Owner's Manual page 294

292 Technical data
International service schedule
Required engine oil quality
Engine oil quality
dexos 1 (if available)
dexos 2
In case dexos quality is unavailable you may use the oil qualities listed below:
Engine oil quality
GM-LL-A-025
GM-LL-B-025
All countries with international service interval 3 286
Petrol engines
(including CNG, LPG, E85)
✔
✔
All countries with international service interval 3 286
Petrol engines
(including CNG, LPG, E85)
✔
–
Diesel engines
–
✔
Diesel engines
–
✔