Indian Oil Corporation Ltd. Offers High Octane and Eco-Friendly Fuel. Indian Oil Corporation Ltd. Is an ISO 9002 certified company. The company supplies Diesels, Fuels, Gas and Lubricants with different brand names. The High Octane and Eco-Friendly Fuel come under the brand name "AutoGas [LPG]" is obtained from natural gas through fractionation and from crude oil through refining. It is a mixture of petroleum gases like propane and butane. The higher energy content in this fuel results in a 10% reduction of CO2 emission as compared to MS. The High Octane and Eco-Friendly Fuel is a gas at atmospheric pressure and normal temperatures, but it can be liquefied when moderate pressure is applied or when the temperature is sufficiently reduced.