Brother,I have altis 1.6,2015 model 125000 km driven. I use 5w-40 grade fully synthetic oil.. my recommendations are
1)Kixx pao 5w-40
2)Eurol superlite 5w-40
3)Shell helix ultra 5w-40.
+
After every 30000kms,always service catalytic converter wether its honda car or toyota or any... it is necessary... bcz it chocks and car engine heats upto 110 degrees Celsius as my Heads up display in car shows temperature.. and it is quite dangerous for you engine, mounting rubber vibration and demage, acceleration,fuel average etc.. + always use engine oil flush if your car is more than 30000kms driven.
So, I would recommend 5w-40 grade oil which should be fully synthetic + catalytic converter service..if your car doesn't drop oil level,this maintenance will add on your car mileage