I would suggest fully synthetic 5w-30 engine oil from some reputed brand, meeting latest API SN / SN Plus, and / or ILSAC GF-5 criteria. The oil must be 100% genuine and original.
If you want best value for money oil, go for Total Quartz 9000 Future series 5w-30, and change oil + oil filter after every 5-7,000 Kms / when oil becomes dirty (which ever comes first).
I would suggest engine flush before switching to this new engine oil grade / brand. Its recommended but not compulsory.
I hope, this helps. Thank you.