Pakistan State Oil on Friday launched Pakistan's first environment-friendly fuel - E10 Gasoline - in Karachi, Lahore and Islamabad, report said. The new fuel, named E10 Gasoline that was being prepared by blending ten percent ethanol with petrol, has been introduced as part of government's strategy to promote alternate energy resources, Advisor to Prime Minister on Petroleum Dr Asim Hussain said while addressing the launching ceremony of the fuel here. E10 will not only help the country in reducing its import bill in coming years but will also provide motorists with an economical fuel option, he observed.