Most Automobiles Made Prior to 2000 Aren't Equipped to Handle Alcohol Long-Term, and Fueling with Ethanol Can Lead to Leaks, Rust, and Corrosion. However...
Most automobiles made prior to 2000 aren't equipped to handle alcohol long-term, and fueling with ethanol can lead to leaks, rust, and corrosion. However, since alcohol has become a regular additive to gasoline, modern fuel systems have developed a much higher tolerance for the substance.
Can cars run on 100% alcohol?
Most cars on the road today in the U.S. can run on blends of up to 10% ethanol, and ethanol represented 10% of the U.S. gasoline fuel supply derived from domestic sources in 2011. Some flexible-fuel vehicles are able to use up to 100% ethanol.