I am feeling not the good experience regarding mileage. At 90 Km i injected 2 litre fuel in GD 110 tank. At 160 Km I have to convert my bike to Reserve, mean average of 36 km per liter. I am driving my bike maximum at the speed of 40 km/h, normally at the speed of 30 km/h with in city in 3rd gear. How to improve its mileage?