Changing the gasoline

Hi

I am having 2017 Honda City. Till now i'm using E85 gasoline for this car. Is it okay to go for E20 because I heard that it will give better mileage when compared to E85, Now I am getting mileage of 10-12kms/ltr. If I can change it, how to change it, what is the procedure and guidelines I need to follow before and after changing it.

Thanks

E85 provides more power. Not sure what you should modify when shifting to E20. Best to look for specific car forums. Best of luck.

Yep! Car forums are your best bet. Cheers.

Thanks guys, will look into it.

have a nice day.