I used 0w-20 for 10,000 kms (two fills after 5,000 kms). I did not face any issue in any weather, road, highway driving, hill drive. Car felt very light and responsive. However, I did not get good fuel economy on it. It was a couple of kms down compared to 5w-50.
I have switched back to Taglon 05w-50, it gieve consistent good fule economy. 12.4 kms/lit in city drive in extreme congestion, stop and go traffic.