It's the ethanol that boosts the fuel's rating to 87, thanks to ethanol's naturally high-octane value of around 114. So, while many might assume that ethanol is simply an environmentally friendly ...

TOPEKA, Kan. — Consumers across the U.S. still will be able to buy higher-ethanol blend E15 gasoline this summer, the ...

using lower-octane petrol in a European car or any vehicle requiring higher-octane fuel can damage the engine's pistons and rings. He points out that the cost of these repairs will far outweigh ...