Green Car Congress
OCTOBER 11, 2019
These top candidates, when blended with petroleum and used in a boosted spark ignition (BSI) engine, will offer environmental benefits and boost energy efficiency all while being available at a competitive price. These blendstocks are best-suited for light-duty (LD) gasoline BSI engines.
Green Car Congress
AUGUST 25, 2015
Alcohol and gasoline-alcohol blends also offer efficiency benefits independent of their octane value. Most regular-grade gasoline in the US is sold with a minimum octane rating of 87 AKI, corresponding to approximately 91−92 RON. Premium-grade gasoline is listed as 91−93 AKI minimum, corresponding to 96−98 RON.
Green Car Congress
AUGUST 30, 2009
In 1975, General Ernesto Geisel, then-president of Brazil, ordered the country’s gasoline supply mixed with 10% ethanol. The level was raised to 25% over the next five years, which was intended to maintain a constant Brazilian gasoline supply for an ever-increasing demand. These were arguably the first flex-fuel vehicles.
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