It is a topic of discussion for centuries that crude oil reserves cannot be measured. As a result caution was there for the utilisation of available crude oil. Researches are carrying out around the globe for finding the alternatives to crude oil. To depend the under ocean for each and every activity in the ground results in the easy depletion of resources. Hence it was cautioned that every available alternatives need to be explored. It was in such a context that bio fuels were started to explore. But the fuels that were processed from plants had a different octane compared to the natural petroleum. Such bio fuels were a reason for higher fumes and increased pollution. So recently it was claimed by some reports that blending of ethanol is very effective. But what is the speciality of E20/E30? E20/E30 are simply bio products processed from natural resources like sugarcane. The energy we get from drinking sugarcane juice or its by products like beverages is very good for health. But over use of it results into life style diseases like diabetic and in a future date it may result into the failure of some parts of the body. When the same sugarcane is distilled and blend into petrol the constituents in petrol will change. In the case of E20, it is claimed that there is 20% of Ethanol. But sources does not admit that the ethanol blend is refined and it does not affect the lifetime of vehicles. But it is promoted with a tagline that crude oil use will be decreased. May be it is true. But the damage produced to the engine of vehicles are still not clearly stated. If a vehicle can completely run on alcoholic substitutes like ethanol it will be an achievement for the environmental researchers. Petroleum mining can be reduced and the impact of climate change due to the release of heat and other emissions from crude oil can be decreased. In the meantime the profit of companies that produce ethanol has also been increased. But as a matter of contradiction, even the carriages used to transport Ethanol from the place of manufacturing to the fuel stations at a distant place do not depend on Ethanol blend. So the credibility of Ethanol mix itself is questioned. As a result the reliability itself has been questioned if there would be a successfully processed E95/E100.