Over the last few years, there has been a growing debate over the accepted amount of ethanol in gasoline; attempting to stabilize costs, ecological concerns, and efficiency has made this a rather daunting job. The legal limit for gasoline-powered engines is 10 percent; some manufacturers of this item remain in the process of acquiring a waiver to boost the allowable total up to 15 percent. This is where the conflict in between manufacturers of engines and manufacturers of this renewable energy source is the sharpest.
The arguments of enemies are also compelling. Makers explain that the lower power material of these fuel mixes ultimately translates right into more energy usage and also higher prices for the customer. The more recent flex-fuel automobiles, which use a blend of 85 percent ethanol as well as 15 percent fuel, actually have a lesser gas mileage than their standard counterparts. A second disagreement is that older engines (those made before 2001) are not approved for the newer blends and could experience problems. Last but not least, there is a recurring conversation as to whether land that can be utilized for growing meals crops should, instead, be used to produce plants for gas.