Is Shell Petrol better than others? in Performance Posted March 23, 2012 · Report reply All the PSU have got normal fuel which is of 87 octane and premium one IOC Extra Premium 91 octane, BP Speed 89 Octane and HP Power also has 89 Octane vs Shell normal and super both are 91 octane fuel....super with some additives. I have been using Shell normal in my 2003 santro which has clocked 90k km in odometer and returns 13kmpl with ac on in Bangalore traffic. As an when i switch over to other fuels the avg drops by min 1 kmpl. Shell fuel is expensive by Rs 2 in Bangalore but its cost effective.